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HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi

HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi

Item # HS381-9067
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Brake Actuator
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HS381-9067 - Disc Brakes Hydrastar Brake Actuator
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Vented, marine-grade aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic disc brakes. Includes wiring, 7-way harness, and breakaway. Brake lines sold separately. Call 800-298-8924 to order Hydrastar brake actuator part number HS381-9067 or order online at etrailer.com. Free expert support on all Hydrastar products. Guaranteed Lowest Price and Fastest Shipping for HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi. Brake Actuator reviews from real customers.
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Hydrastar Brake Actuator - HS381-9067

  • Electric-Hydraulic Brake Actuator
  • Disc Brakes
  • Hydrastar
  • 1600 psi

Vented, marine-grade aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic disc brakes. Includes wiring, 7-way harness, and breakaway. Brake lines sold separately.


Features:

  • Electric-over-hydraulic brake actuator activates your trailer's hydraulic brakes when you apply the brakes in your tow vehicle
    • Brake controller (sold separately) is required to send signal from tow vehicle to actuator when brakes are applied
    • Included 7-way trailer connector transmits signal from brake controller
  • Improved functionality when compared with surge brake couplers
    • Faster response time - trailer brakes are triggered when you apply brakes in tow vehicle, as opposed to when trailer pushes against hitch ball
    • No need to manually lock out brakes when you back up
    • Trailer brakes can be intentionally activated when you reverse
    • Manual override on brake controller can be activated so you can engage the trailer brakes without having to apply your vehicle brakes
  • Electronic, proportional pressure valve ensures that braking is smooth and effective
  • Vented end plate releases pressure, moisture, and heat in order to protect the internal components
    • Allows actuator to be mounted in places where most actuators would overheat
  • Built-in bleeder screw on actuator lets you easily flush air out of your brake lines
  • Durable extruded aluminum construction provides superior corrosion resistance
    • Marine-grade gasket and stainless steel hardware make actuator ideal for marine use
  • Breakaway system activates your trailer's brakes if the trailer disconnects from the tow vehicle
    • Battery charger ensures the system's battery is always charged
    • Weather-resistant polymer case is top loading for easy access from above
    • Built-in mounting bracket offers simple installation
  • Insulated 7-way, RV-style trailer connector is molded to protect wires and terminals
  • Weatherproof, corrosion-resistant 7-pole junction box protects wires, eases installation, and makes diagnostics simple
    • Ring terminals and butt connectors included for connecting wiring
  • Wire loom protects wiring from the elements and allows wires in and out along any point of the loom for easy installation
  • Mounting pads have adhesive backing for securing cable ties
  • Kit includes:
    • HydraStar marine electric-over-hydraulic actuator (Model MHBA-16)
    • Breakaway system
    • 7-Way trailer connector
    • 7-Pole junction box
    • 6' Split wire loom
    • 4 Mounting pads
    • Mounting and wiring hardware
  • DOT compliant
  • Made in the USA


Specs:

  • Application: single-, tandem-, or triple-axle trailers with disc brakes
  • Maximum output pressure: 1,600 psi
  • Power: 12V DC
  • Hydraulic port size: 3/16"
  • Actuator dimensions: 11-3/4" long x 3" wide x 7-3/8" tall
  • Actuator wire configuration:
    • Black: 12-volt power
    • Blue: brake controller
    • Yellow: breakaway
    • White: ground
  • Battery capacity: 5 amp-hours
  • Breakaway battery case dimensions: 5-7/16" long x 4-1/4" wide x 4-1/4" tall
  • Battery dimensions: 3-7/8" long x 3-1/2" wide x 2-11/16" tall
  • Breakaway switch lead wire length: 7-1/2"
  • Trailer connector length: 6'
  • Trailer connector wire gauges:
    • Black/white: 10 gauge
    • Blue: 12 gauge
    • Brown/red/green/yellow: 14 gauge
  • Junction box dimensions: 6-3/4" long x 3-1/2" wide x 2-1/4" tall
  • Split wire loom length: 6'
  • 2-Year limited warranty


Note: Do not power wash the HydraStar actuator or take it through a commercial car wash. High-pressure water may damage the seals on the actuator.


The HydraStar electric-over-hydraulic trailer brake actuator applies pressure to your trailer's hydraulic brake system in response to the electrical signals sent from your in-cab brake controller. As a result, your trailer's hydraulic brakes will be activated every time you apply the brakes in your vehicle or press the manual override on your controller.


Pair the HydraStar electric-over-hydraulic actuator with your trailer's disc brakes to get the best possible braking setup. With disc brakes, you already have more consistent braking at higher speeds and a shorter stopping distance than you'd get with drum brakes. In addition to more reliable braking, you also have less cost to maintain the brakes as there are fewer moving parts. Combine these benefits with an electric brake controller and you'll get greater control over your already superior brakes, providing you with the best braking performance.


HydraStar Electric-Over-Hydraulic Actuator vs. Standard Surge Brake Actuators

With the HydraStar electric-over-hydraulic actuator, you can get all the benefits of towing with an electric brake controller while using hydraulic brakes. Because this actuator will activate according to the settings you have chosen for your brake controller (sold separately), you will have more control over when and how your trailer brakes engage. Depending on the features of your brake controller, you may be able to control both the rate and intensity with which your trailer's brakes activate. You can also use the manual override on your brake controller, which allows you to engage the trailer brakes without having to apply the brakes in your vehicle. And perhaps most impressive, if you have a proportional brake controller, your brakes will be activated with an intensity that matches the braking speed and power of your rig.


This pump-and-motor-based system increases response time compared with traditional actuators because the trailer brakes are triggered when you apply the brakes in the tow vehicle, as opposed to when the trailer pushes against the hitch ball. This not only gives you faster, more efficient braking, but it also eliminates the pushing sensation that occurs in setups that use standard surge brake actuators.


HydraStar actuators are also beneficial because, unlike standard surge couplers, they allow you to activate your brakes when reversing down an incline, such as a boat ramp. Having the ability to brake in reverse gives you more control and prevents wear on your tow vehicle.


HydraStar Installation

Hydrastar Installation Diagram

This HydraStar electric-over-hydraulic brake actuator will give you years of trailer-stopping performance. The actuator mounts on your trailer's frame with the included stainless steel hardware. The included 7-pole junction box with color-coded studs makes it simple to splice into your trailer's wiring and to connect the provided 7-way trailer connector. Once the actuator is correctly wired, you can connect your trailer's hydraulic brake lines to the 3/16" female port. Lines and fittings are sold separately.


Durable, Marine-Grade Construction

The HydraStar Marine actuator is ideal for use on boat trailers. Just like other HydraStar electric-over-hydraulic actuator models, this system is built of extruded anodized aluminum for superior corrosion resistance. The weathertight seals protect internal components from the elements. The HydraStar Marine actuator also features marine-grade gaskets and stainless steel hardware that won't rust. These extra features make it perfect for marine applications.


This actuator also has a vented end plate that releases pressure, moisture, and heat to help prevent any internal damage. Unlike models that are unable to release heat and pressure, this vented actuator can be safely mounted inside of a compartment on your trailer. As a result, this actuator is great for gooseneck and fifth-wheel trailers where finding space on the tongue can be nearly impossible.


Breakaway Kit

Required by law in most states, a breakaway system will activate your trailer's brakes in the unlikely event that your trailer disconnects from your tow vehicle. This kit wires to the included battery and to the HydraStar actuator. If your trailer separates from your tow vehicle, the breakaway kit signals the actuator to apply the brakes.


Brake Controller Compatibility

Not all electric trailer brake controllers will work with this electric-over-hydraulic brake actuator. See the following table to determine compatibility with common models of brake controllers. For best performance, it is recommended that you use an aftermarket electric brake controller rather than an OEM factory-installed controller.


ManufacturerVehicle Years/Controller ModelsCompatibleCompatible if Used with HBA-CAM
VehiclesFord2005-2006Yes
2007-2008NoYes
2009-2015Yes
Dodge2010-2015Yes
GMC/Chevy2007-2018NoYes
Brake ControllersDraw-TiteActivator (5100)Yes
Activator II (5500 or 5510)Yes
Activator III (5520)Yes
Activator IV (5504)Yes
HayesEnergize III (81741B)Yes
Energize III+ (HA81742B)Yes
Energize XPC (HA81745)Yes
Engage (HA81760)Yes
G2 Brake Boss (81792BB)Yes
Syncronizer (HA81725)Yes
Endeavor (81770)Yes
Genesis (HA81790)Yes
Blackbird (HA81726)Yes
HopkinsImpulse Digital (47325)Yes
Insight (HM47297)Yes
Brake Force (47225)No
Reliance (47284)No
Agility (47294 or 47295)No
MaxbrakeBrake ControllerYes
RedlineRedline TA900Yes
RedlineTA900ANo
RedlineTA1000No
RedlineTA1100No
RedlineTA1200No
TekonshaProdigy (90185)Yes
Prodigy P2 (90885)Yes
Prodigy P3 (90195)Yes
Primus IQ (TK90160)No
PowerTrac (39523)Yes
Voyager (39510 or 9030)Yes
ValleyVA32812 BlackbirdYes
VA32811 PhantomYes


381-9067 Cargo Towing Solutions (formerly Carlisle) Hydra Star Marine Surge Brake Conversion Kit - 1600 psi - Model MHBA-16-CON





Video of HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for HydraStar Marine Electric Over Hydraulic Actuator Installation

Speaker 1: Today we're gonna be having a look at and showing you how to install the HydraStar Marine Electric Over Hydraulic Actuator with Breakaway and Seven Way RV Harness, rated at 1,600 PSI, this is part number HS381-9067. Now the reason you're gonna want an electric over hydraulic actuator to control your trailer brakes such as this one is because it's far superior than your typical surge coupler style brakes that your boat trailer's normally have. With your surge breaks you have no control over it whatsoever, with this you can dial up or down the intensity of the brakes being applied with the brake controller inside your truck.Also when you go to back up your trailer with surge brakes as soon as you start to back up the brakes are being applied, the more force they're using to back up the harder the brakes are gonna be applied unless you have a manual lock out which you have to get out of your truck, engage the lock out so you can back up without the brakes being applied. With this where you have your brake controller set up at when you're backing up that's how much the brakes are gonna be applied so it makes it easier to back your boat into the water down the ramp but yet you still have some brake assistance there so you don't have all the weight of the boat or the trailer dragging you into the water.Also with the surge coupler the way the brakes are applied is the weight of the boat and the trailer start to push the coupler against your truck and as the coupler collapses it applies pressure to the fluid and engages the brakes so there is a delay of the brakes being applied. With the actuator here being electric over hydraulic it's immediate, there is no delay so as soon as we start to activate our brakes in our vehicle the brakes are being applied in our trailer. Now this is a marine rated actuator, by being marine rated we have an aluminum construction here which is corrosion resistant and it is also vented to help relived pressure and let moisture escape.

This will ensure that our brakes will operate appropriately and we don't get any moisture inside our unit causing corrosion and damage. Our gaskets inside are also marine rated so you don't have to worry about salt water corroding them.Now what's great about this kit compared to other option out there is that this comes with everything you need in order to convert your existing boat trailer or other trailer that has hydraulic surge brakes over to one that has electric over hydraulic set up. We have our actuator and new junction box to hold all of our wiring and a seven way plug so we can utilize the brake controller inside of our vehicle which is great since most boat trailers only come with a five pole flat to get the reverse signal out to your lockout for your actuator. We also have this breakaway kit with this nice battery box here which is self charging so you don't have to worry about taking the battery out to charge it, it has a built in charger, and we can check the condition of the battery by pushing this button on the top. We also have the breakaway switch which will apply our trailer brakes in the unlikely event that our trailer came disconnected from our truck.

With the pin pulled you can hear the brakes being applied.This kit is rated up to 1,600 PSI so it'll be perfect for our disc brake applications on our trailers. It is rated to support trailers up to three axles, anywhere from one to three. The one thing that I really like about this kit and with electric over hydraulic brakes in general when comparing them to surge couplers by having so much more control over them we can activate our brakes manually from inside our vehicle by using the manual brake override on our brake controller so if our trailer starts to sway side to side on us and we need to bring it back and align our vehicle we can use the manual override by sliding the adjuster over just to slow our trailer down and bring it back in line. With the surge coupler you can't do that, many of our customers feel that this is a much safer way of towing their trailer behind their vehicle.Now when comparing this actuator to other electric over hydraulic actuators out there such as the Dexter DX series this is a much slimmer design actuator so we're much more versatile in our mounting solutions, it'll work great on top of narrow channel frame trailers such as this one. Now for a few measurements to better assist you in choosing mounting locations for your components our actuator measures 11 and three quarters inches long, it is three inches wide at its widest point, and it is seven and three eighths of an inch tall from the bottom to the top of the cab.

Our junction box at its longest points measures six and three quarters of an inch long, at its widest point it is three and a half inches wide, and it is two and a quarter inch tall. Now the battery box for our breakaway system is five and 7-16ths of an inch long, it is four and a quarter inch wide, it is also four and a quarter inch tall. Our seven way cable measures six feet long from the very end to where it goes into our junction box.Now that we've gone over some features we'll show you how to get it installed. To begin our install we need to find a place to mount our actuator, in our particular case since we are working on a boat trailer which already had hydraulic surge brakes on it we're gonna mount ours on the center channel of our trailer here because this will protect it the most from side to side, we also want to make sure that our hydraulic fitting is facing where the brake line comes out of our current cylinder. We'll take a drill now and go through each one of the holes in the four corners to make a pilot hole.

With our pilot holes now driller we'll now secure it in place with our provided self tapping screws.Now we need to find a spot to mount our junction box for all the wiring. We're just gonna put ours right behind our HydraStar unit, this way our wires can easily go inside the unit. We'll mark out our holes by making a pilot hole with our drill, now in our junction box here I like to point out there's two holes on one side and one hole on the other side. We want to have the side of our two holes facing towards the front of our trailer that way we'll have our seven way come out of one hole and then the wires that go in from our HydraStar unit will go in the other hole. Now we'll secure this in place with our self tappers.Now we need to find a position to mount our breakaway switch. We're gonna mount ours on the outside of our passengers side of our trailer right here as far front as we possibly can. We don't want to attach to our coupler area here because this coupler will be replaced at some point with one that is not a hydraulic surge coupler. We'll mark where we want it and drill a pilot hole. Now we'll mount our breakaway switch, ensuring that our pin faces the front of the trailer, line up the hole, ensure that it's as level as possible, and we'll secure it in place with the self tapping screw.Now we need to find a location to mount our breakaway battery box. We're gonna mount ours on the inside of our passengers side frame about right next to where we mounted our junction box. Now depending on your application this may be a little bit more difficult for you to do because of clearance so we're using a right angle drill to make this easier for us. We're gonna mark out our top holes first. Okay we have our upper holes marked out now so now we're going to drill those holes out completely. Okay now we'll secure it in place with our self tapping screws. We went ahead and repeated the same process for our bottom screws, this way our breakaway battery box is securely mounted.Now we can start working on our wiring, we'll lift off our cover for our junction box, inside we'll find several color coded terminals. We'll take the end of our seven way now and one of our plugs here, you'll notice how the plug is sealed where there's a small pin hole in it, we'll just poke our wires through that pin hole. Okay with the wires poked through we'll just push this down until it's covering our sleeve here on the wiring, we'll have the flat part facing up and we'll slide this opening here through the slot in our box. Now we'll take our wire clamp here, sit it over our seven way wires, and we'll clamp the wires in place with our provided screws.Our junction box is color coded to the exact same colors of the wires from our seven way connector so we'll strip back insulation from each wire, crimp on a connector, and match it up to the corresponding color. Now some of these wires are thicker than other ones, for the thicker wires we'll use the yellow connectors, for the thinner wires we'll use the blue connectors. The yellows are meant for 10 to 12 gauge wiring and the blues are meant for 14 to 16 gauge. Now as we work our way closer to where our connector enters the box we can actually cut off excess wiring so we don't have to have too much slack inside here and it gives us a cleaner install.Now the ring terminals that we crimped on are heat shrink ring terminals so we'll use a heat gun to shrink down the ring terminals to make sure we have a nice weather tight seal. You'll want to use a heat gun over a lighter because a heat gun does provide a source of indirect heat versus an open flame, the indirect heat won't damage the connector like a direct flame will from a lighter, we have these heat guns available on our website. Here's what it looks like with our heat shrink ring terminals shrunk down, you can see it goes around our wire and seals nicely so we don't have to worry about any moisture getting inside.Now we'll take the wires that come from our HydraStar unit itself, we'll separate the yellow one so we'll just have the black, the blue, and the white, we'll take another one of these grommets here and we'll push those three wires through it. Now we'll take the three wires from our breakaway battery, we'll separate the blue taking the black and the white, and we'll push those through that grommet as well. Now we'll take the wiring that went to our existing trailer plug, we already went ahead and cut that off, and we're just left with the wiring that runs our lights for our taillights, our marker lights, and turn signals and brake lights. We'll shove that through the grommet as well.Now we'll take the short segment of white wire that comes with the kit and this will be our ground wire for our trailer and we'll shove this through the grommet. With all of the wires that we now need through our grommet we can place the grommet inside the junction box. Now we'll take our clamp, go over our wires, and we'll secure them in place so they don't get pulled out.Now we'll take the blue wire from our HydraStar unit and we'll crimp on one of our heat shrink ring terminals and we'll place that over the terminal in our junction box that has the blue wire from our seven way going to it, it's also the terminal with the blue dot over it. We'll measure off how much of our black wire we're gonna need to connect to the black terminal from our HydraStar unit, cut off the excess, and we'll strip back some insulation, we'll crimp on a ring terminal, and measure off how much wire we need from the white wire from the HydraStar unit, strip back some insulation, and you'll crimp on a terminal, place that over the stud with the white dot, the short strand of white wire that we passed through for our ground we'll strip back some insulation and we'll crimp on a terminal there, place that over the stud as well.Now we'll take the white wire from our breakaway kit, measure off how much we're gonna need here, strip back some insulation, and we'll crimp on the ring terminal there, place that over the stud too. Now we'll take the black wire from the breakaway kit, measure off what we're gonna need, cut off the excess, strip back some insulation, and we'll crimp on one of our ring terminals. Now just like we did before we'll shrink down all of our ring terminals with the heat gun.Now that we have all of our ring terminals heat shrinked inside for our white terminal, our black terminal, our blue terminal, we can install the nuts. The white terminal, this is our ground, the black terminal that's our constant 12 volt power, the blue that is the electric trailer brake output from our truck, this is where the HydraStar unit will get its signal to operate from the brake controller inside of our truck. We'll also put a nut over the yellow terminal, we're not attaching any other wires here just the wire from our seven way connector. This is for the reverse output signal from our truck. If you have reverse lights on your trailer they would hook in here.Now we need to work on hooking up our trailer's light circuits to our three terminals that are left, I have a red one, a green one, and a brown one. The brown one is for our trailer's right turn signal and right brake light and that gets our green wire. We'll separate our green wire and all this wiring here was already on our trailer. We'll measure off how much we're gonna need, cut off the excess, strip back some insulation, and we'll crimp on one of our small diameter heat shrink ring terminals. Now we're going to use this green terminal here, this is for our taillights and running lights and that'll get the brown wires.We'll separate our other brown wire from this yellow wire here, measure off what we're gonna need, cut off the excess, strip back insulation from both those brown wires, and we'll twist these two wires together and we'll crimp on one of our larger diameter yellow ring terminals to those two wires and that leaves us with our yellow wire for our left turn signal and our left brake light. That'll go to the red terminal here, cut off our excess, strip back the insulation, take one of our remaining ring terminals, and we'll crimp that into place. Now we'll use a heat gun and we'll shrink down our terminals. Okay with those all shrunk down now we'll place them over the proper studs and we'll install our nuts. Okay now that we have all of our wiring connections made inside of our junction box we can install our grommets in the locations where wires can pass through that we're not using so we have one on this side and one on the backside, then we can install the lid now.Now the short white wire that we added for our ground that came with our kit we'll strip off some insulation from the other end of it and we'll crimp on the final ring terminal that comes with the kit and we'll shrink down the insulation. Now this ring terminal needs to be attached to the frame of our trailer and this will ground all of our wiring that we've installed. We're gonna mark out a section in our frame where we can drill a hole for it then we'll drill a pilot hole. With our pilot hole made we'll now secure the ring terminal in place with the self tapping screw.Now the blue wire from our breakaway battery and the yellow wire from our HydraStar unit these need to connect to the wires on our breakaway switch. It doesn't matter which wire connects to which on this, it senses the switch once this pin is pulled it closes the circuit so it doesn't matter how you connect this. As you can see we're not gonna have enough wire to do this so we will have to supply some of our own wire. If you need to pick up some wire on our website you can pick it up as part number 12-1-1 for 12 gauge wire, it's sold by the foot.We'll start by stripping off some insulation from one of the wires, now because we are extending our wires we are gonna need some more butt connectors. These are still heat shrink butt connectors, these are for 14 to 16 gauge wires, they will work on 10 to 12 gauge wires as well, you can pick these up on our website if you need some. Crimp that on, take our extra wire that we have, strip off some insulation, slip it in the other end of the butt connector, and we'll crimp that into place. Measure off how much we're gonna need, cut off the excess, strip back some insulation, crimp on another butt connector, take one of the wires from our breakaway, strip off some insulation, stick that in the other end, and we'll crimp that down. Now we'll repeat the same process for the other wire. With all of our connections made we'll shrink down those connectors with our heat gun.With all of our connections made we went ahead and used the provided wire loom to help conceal our wiring and give us a nice clean look. Now with our wire loom we're gonna want to secure this to our trailer, now in order to secure a wire loom to our trailer we have these zip tie attachment points that have doubled sided tape on the back of them. These come with our kit, we'll take some soapy water or rubbing alcohol and we'll clean off our frame where we're going to stick our attachment points this way they have a better chance of adhering well. The zip tie will go through it, wrap around the wire loom, and we'll cut off our excess zip ties. We went ahead and repeated the same process just to secure the rest of the wire loom to the trailer so we don't snag it on anything and give us a nice clean look.Now we need to locate our brake line that goes to the back, in our case ours is right here going into a reverse lockout solenoid and we'll disconnect this brake line. Okay we have our brake line where we have easy access to our fitting knob, we need to connect this fitting to the fitting on our actuator. It's not gonna be long enough so we're gonna use a flexible rubber hose which we have available on our website in order to make this connection. Now depending on your application you may need a different length than what we're using, we have many different options available for you so just use the search feature on our website and search for the length that you need. We'll take the female end and we'll thread it onto the male end and we'll snug that down. Now we'll remove the plug from our actuator, place in the fitting from our brake hose, screw it into place, and we'll snug it down.Now we need to fill our reservoir with fluid, take the cap off, we'll use a fresh, unopened bottle of brake fluid and we'll fill it up. With it full we'll replace the cap and we'll begin the bleeding process. Okay now we'll take the yellow cap off the bleeder screw on our actuator, now we have access to the top of our bleeder on the nut. We'll take a wrench, stick it over the nut, replace a container with a hose on it to catch our brake fluid on that. Now we have two ways of bleeding our brakes, we can hook up to our vehicle and have someone operate the brake controller manual override inside the vehicle or we can have someone pull our breakaway pin.We'll go ahead and pull the pin now and we'll crack open the bleeder screw and we'll close it, reinstall the pin. What we're looking for is clean fluid coming out of our hose with no air bubbles, we'll repeat this process a couple of times. Go ahead. With the clean fluid coming out we'll pull the hose off, reinstall our cap, and double check our fluid level, topping it off as necessary. We'll replace the cap. Now we'll go back and bleed the brakes themselves with the bleeder screws on our calipers starting with the one furthest away from our actuator and working our way towards the front. Okay we're now ready to have the breakaway pin pulled again, we'll open our bleeder, and we'll repeat this process until we have nice clean fluid coming through. We'll do this on all of our wheels.That completes our look at the HydraStar Marine Electric Over Hydraulic Actuator with Breakaway and Seven Way RV Harness, rated at 1,600 PSI, this is part number HS381-9067.


Customer Reviews

HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi - HS381-9067

Average Customer Rating:  4.8 out of 5 stars   (16 Customer Reviews)

Vented, marine-grade aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic disc brakes. Includes wiring, 7-way harness, and breakaway. Brake lines sold separately.

- HS381-9067
by:

I waited several months after the purchase to write a review. This was a great addition to my boat trailer and worth every cent. I have driven hundreds of miles this year with the trailer and this product does make a huge difference with trailer stopping power and control. I tow a 24ft cabin cruiser on the interstate with crosswinds and semi-trucks that would cause the trailer to sway a little, it was very convenient and reassuring to able to engage the trailer brake to help that out the sway in the trailer. The video provided a lot of help and was easy to follow. Install took a couple of hours, the hardest thing was finding a brake line connector in stock from the local auto parts stores. Plus this makes bleeding the brakes super easy too! 706856



- HS381-9067
by:

It took a lot longer to install the unit than I thought, and I am mechanically and electrically competent. Being there is no mounting hardware I had to purchase several bolts and fasteners to securely attach everything to my trailer. The color coding on the wire from the plug is not standard with anything. I found out the hard way and had to rewire the lights, brakes, and signals. After two days of constructing and installing the bracket and unit, I finally got to test it. It works great so far and much smoother and controllable than my old surge coupler. etrailer promptly sent everything in a strong box and it arrived in only a few days to Alaska from the date I placed my order. Great so far! 422281



- HS381-9067
by:

Awesome system. As described and makes trailering my 12k boat easy. Will never have a trailer without this system. Make sure you check your brake lines and caliper seals. This system works great and will find weak point in your system if you have one. Install was also easy, great video available for install! 739749



- HS381-9067
by:

As described and arrived promptly. 739748



- HS381-9067
by:

Terrific quality, fair price, excellent service. 732932



- HS381-9067
by:

Breaking system works extremely well weather I'm pulling my dozer or empty can stop on a dime but recently have a condenser put on my truck and now my fine adjustment is messed up but that not the system 674850



- HS381-9067
by:

The product was great, arrived in a timely manner and was complete. The installation video from etrailer.com was spot on and really well made. My only negative is that the self tapping screws which come with the kit are absolute garbage almost every one of them broke off and the heads are really too small for the size of the holes in the actuator. Recommend you drill and tap each hole and install stainless hardware toss the self tapper in the trash. 667684



- HS381-9067
by:

This is great. Easy to install. I put mine in a trailer box to help secure it better just incase. I immediately noticed a huge difference over the surge brakes. I also pull a 5th wheel and wanted the same braking system on my boat trailer. Highly recommend. 656504



- HS381-9067
by:

Works flawlessly. Very nice hydraulic brake kit for boat trailer. 636418



- HS381-9067
by:

No issues with electric over hydraulic brake controller 617704



- HS381-9067
by:

So far this product seems to be working excellent. Installed on my 2019 Dodge Ram 1500. Installation went very well, exactly as described on the video. Lori did an excellent job of helping me place my order and followed up with me to make sure I recieved everything I needed to complete the installation. I would recomend this product. 553142



- HS381-9067
by:

Great product, replaced the Dexter model , and it works just as good if not better than the Dexter one. I have had this thing totally submersed in water because on my boat trailer there is no place where it doesn’t get submersed in water. Still works great, wiring and install was a breeze, I did it all the morning we left for the lake. 502418



- HS381-9067
by:

Product works very well, much better than surge brake system. Package arrived well packed. Have used etrailer numerous times, always great results! 469400


Comments
Working great, fine product
Wallace B - 01/25/2019

48902

- HS381-9067
by:

Delivered on time. Just one thing, the vent cap was damaged in freight. Easily replaceable. 433796



- HS381-9067
by:

Etrailers catalogue provided a complete & accurate description of the 8 items purchased. Placing the order by phone was fast & efficient. Items arrived within 4 working days, no tax no shipping charge. Professional all around. 317745


Comments
The EOH braking system works perfectly. You are my supplier of choice ifwhen I need additional trailer parts on the future.
Pat M - 11/21/2017

31131

- HS381-9067
by:

System works great, I recommend it as a good replacement for surge brakes 314855


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Ask the Experts about this Hydrastar Brake Actuator

  • Compatibility of HydraStar EOH System with OEM Brake Controller on 2016 Ram Pickup
    Yes, the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9067 is compatible with the OEM brake controller on your 2016 Ram pickup. HydraStar has actually confirmed that it is compatible all the way back to 2010 so as long as your boat trailer has disc brakes you are good to go! If you have drum brakes instead you just need the HydraStar kit # HS381-9066 which has a lower psi rating.
    view full answer...
  • Electric Over Hydraulic Actuator Setup Recommendation for Converting EZ Loader Boat Trailer
    Yes, the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9067 is the exact kit you'd want/need to convert you surge disc brakes to electric over hydraulic. This includes everything you'd need and also has the best actuator out there. We prefer it because it has the fastest reaction speed and is the most reliable. The factory brake controller of your 2018 Expedition is perfectly compatible with this as well.
    view full answer...
  • Is HydraStar Marine EOH Actuator Kit Compatible With 2017 Nissan Titan XD Factory Brake Controller
    I reached out to HydraStar, who told me the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi # HS381-9067 will work with the factory brake controller on your 2017 Nissan Titan XD and that you do NOT have to use the HydraStar Electric Over Hydraulic Actuator Adapter Module # HBA-CAM. I have added a link to a video review of this actuator as well as an install for you to check out.
    view full answer...
  • How Long Is the Warranty On An Electric Over Hydraulic Actuator for Disc Brakes
    The HydraStar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes part # HS381-8067 which is what comes with the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness part # HS381-9067 has a two year warranty. This is actually one of the highest warranty periods that is offered for an electric over hydraulic actuator. There are a few other options for disc brakes which I have attached for you below along with the warranty period. Dexter DX Series...
    view full answer...
  • Is the Battery for the Breakaway Kit Included with the HydraStar # HS381-9067
    Yes, a complete breakaway kit, including the battery, is included with the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9067. I have attached a review video for you to check out as well.
    view full answer...
  • Adding Electric Over Hydraulic Brakes to a 3-Axle Boat Trailer
    To switch your boat trailer from hydraulic drum brakes to electric over hydraulic disc brakes there are a few parts you will need. You will need the EOH actuator itself. What I recommend is the Hydrastar Marine Electric Over Hydraulic Actuator with Breakaway and 7-Way RV Harness # HS381-9067. You will not have to replace the brake lines or the coupler. If you can lock out the coupler (keep it from actuating in and out) that would be ideal. You will also need to have a brake controller...
    view full answer...
  • Does the HydraStar Electric Over Hydraulic Actuator Part # HBA16 Need a Separate Battery
    The HydraStar Electric Over Hydraulic Actuator part # HBA16 will receive power from the breakways switches battery. The 12 volt power circuit on the 7-way trailer connector will then be used to charge the breakaway switches battery. I have attached a photo of the electrical schematics of the actuator for you. The HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness part # HS381-9067 comes with a breakaway switch and battery but if you already have a 7-way...
    view full answer...
  • Recommended Surge Brake Conversion to Electric Over Hydraulic System with Disc Brakes
    The best braking system you can have between your vehicle and your boat trailer is an Electric Over Hydraulic system with disc brakes. This will give you the best functional braking as well as the most controlled braking. If you are switching systems it is best to do it all at the same time to have compatible components. If you want to go that route, I've attached an article to give you all the components needed as well as the reasoning. My recommendation is to start with the HydraStar...
    view full answer...
  • Electric Over Hydraulic Disc Kit Recommendation for 2006 Zieman Boat Trailer with Surge Brakes
    What you need first is an electric over hydraulic actuator which will allow you to activate the current hydraulic disk brakes you have. Your current brake assemblies and lines will work fine with this. The kit you need that comes with everything you'd need is the Hydrastar part # HS381-9067. Hydrastar actuators are the favorite here among our installers as they work the best and are the most reliable. You can lock out your surge actuator by running a bolt through the two pieces as that's...
    view full answer...
  • Electric Over Hydraulic Actuator Recommendation for Converting from Surge Brakes
    Locking out your UFP A160 by welding the two pieces is one way to convert to an electric over hydraulic actuator. This way you don't have to replace the coupler. Nothing we offer will fit in that housing but we do have great options. For a kit that includes everything you'd need you'd want the part # HS381-9067. This is the actuator plus all of the wiring needed. The Hydrastar kits like this are our installers favorite as they perform the best and are the most reliable.
    view full answer...
  • Parts Needed to Convert Hydraulic Disc Brakes of Trailer to Electric
    I have a great solution. What you'd want to do is convert your trailer to electric over hydraulic brakes. What that means is that you use an actuator like our Hydrastar kit part # HS381-9067 and with it you can use a brake controller installed in the cab of your vehicle to actuate the disc brakes of your trailer. The # HS381-9067 comes with all the electronic pieces needed needed to install. EOH style trailer brakes are the best all around solution. You get the power of hydraulic...
    view full answer...
  • Parts Needed to Convert Disk Brakes to Electric Over Hydraulic on EZ Loader Boat Trailer
    To convert the surge disk brakes on your 2014 EZ Loader Boat Trailer to electric over hydraulic brakes, you will just need a few things. First you will need an electric brake controller that is compatible with electric over hydraulic brakes. For your 2003 Ford Ranger, I recommend the Tekonsha Prodigy P2 # 90885. This is a proportional brake controller with digital display that will receive the signal from your vehicle's brakes and send it to the trailer's actuator. It will be mounted...
    view full answer...
  • Electric Over Hydraulic Actuator Recommendation for Converting Surge Disc to EOH Disc
    The factory brake controller of your 2013 Ford F-150 is compatible with electric over hydraulic actuators so in that regard you are good. Now for a actuator system I recommend going the Hydrastar route as they have proven for us to be the most reliable and fastest working. Our installers love these. Since you have hydraulic lines already ran all you need is the actuator and the wiring. For that the kit you would want is the part # HS381-9067 which is all that's required to install...
    view full answer...
  • Hydrastar Electric Over Hydraulic Brake Kit Recommendation with Single Axle Brake Lines
    Since you have a single brake axle your best option would be to go with the HydraStar EOH Kit part # HS381-9067 which includes everything but the brake lines and then from there use the from Demco # DM5424 to supply the single axle line kit.
    view full answer...
  • Can Boat Drum Surge Brakes be Converted to Electric Over Hydraulic Disc Brakes
    We will have all the parts you need, but first in order to pick out the correct kit with hubs that will fit the spindles you have you will need to know what spindles you have. You can do this by getting the bearing numbers off of the bearings of the hub, use calipers to get exact measurements of the spindle, or if you know the brand and capacity of your axles that can be very helpful as well. If you check out the link I attached you will see the entire process of adding electric over...
    view full answer...
  • Recommendation to Convert Surge Brakes To Electric On 2015 Nitro/Tracker Trailer
    To completely convert your trailer from surge to electric, I recommend the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi # HS381-9067 to keep your hydraulic disc brakes which are far better. Then you just need to add a brake controller to your vehicle like # 90195 which works great with the EOH systems. This combination will give you superior braking and the best of both worlds regarding electric and hydraulic systems. If you wish to...
    view full answer...
  • Availability of HydraStar Disc Brake Kit for Drum Brakes
    There is a drum brake version of the part # HS381-9067 that you referenced. For that you would want the part # HS381-9066. The big difference between these kits is the pressure rating. Disc brakes require a higher psi at 1,600 psi whereas the part # HS381-9066 is lower at 1,200 psi.
    view full answer...
  • Everything Needed to Install Electric Over Hydraulic Disc Brakes on Trailer with 3,500 lb Axle
    I can help you pick out the parts you would need and make it as simple as possible, but there isn't a single axle electric over hydraulic kit that includes everything. You would want to start the part # HS381-9067 which comes with the nicest actuator around, a breakaway kit, junction box and the needed wiring. For the brake components you would want the part # K2R35D for a 3,500 lb kit unless the trailer will be seeing saltwater. In that case you would want the # K2R35S instead. For...
    view full answer...
  • How To Convert Vacuum Over Hydraulic Trailer Brakes to Electric Over Hydraulic Trailer Brakes
    In order to convert the vacuum over hydraulic setup on your trailer to electric over hydraulic you will need an electric over hydraulic actuator, breakaway kit, and trailer wiring. The hubs you have now if operated by hydraulic pressure should not need to replaced as well unless they are too badly worn or there is something with a vacuum over hydraulic setup that I am not aware of which is possible as we do not deal with these types of brakes very often if at all. If you do end up needing...
    view full answer...
  • Advantage of Electric-Over-Hydraulic Brake Actuator
    The main benefit of an electric-over-hydraulic (EOH) actuator is faster response time than a purely hydraulic setup. Switching from a surge coupler to an EOH actuator will not necessarily increase braking force. You might want to check on the condition of your four existing disc brake assemblies to make sure they are properly adjusted. You can also consider an additional set of disc brakes for the one axle that does not currently have brakes. This is more likely to give you the increased...
    view full answer...
  • Converting Boat Trailer with Disc Brakes to Electric Over Hydraulic
    Can you feel the brakes dragging when you are towing? It's very common for disc brakes to get hot to the touch from regular use. They create quite a bit of friction which then creates heat. That said you can pretty easily convert the system to an electric over hydraulic setup with the # HS381-9067 which comes with everything you'd need from the actuator to all of the wiring and components. This comes with the best actuator available because it is the fastest reacting and the most reliable.
    view full answer...
  • Brake Actuator That is Compatible With a 2013 Chevrolet Silverado OEM Brake Controller
    For some reason Ford and GM/Chevy OEM brake controllers tend to have a hard time working with brake actuators. Fortunately I have a solution for you from HydraStar. If your boat trailer is not already equipped with a 7-Way you can use the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness # HS381-9067 along with the Adapter Module # HBA-CAM. The adapter will allow the HydraStar actuator to work with your 2013 Chevrolet Silverado OEM brake controller....
    view full answer...
  • Installing Electric Over Hydraulic Disc Brakes on a Trailer with 3,500 Lb Axles
    The HydraStar Marine Electric Over Hydraulic Actuator part # HS381-9067, Titan Hydraulic Brake Lines and Fittings for Tandem-Axle part # T4830000, and the Titan Premier Disc Brake Kit part # T2HRCM10DAC will give you almost everything you would need to add electric over hydraulic disc brakes to your trailer. Since you have the factory integrated brake controller on your 2013 Ford F-250 you will also need to use the HydraStar Electric Over Hydraulic Actuator Adapter Module for Ford and...
    view full answer...
  • How to Convert Hydraulic Disc Brakes to Electric Over Hydraulic Disc Brakes on a Boat Trailer
    I have the perfect electric over hydraulic actuator kit for you. For this, I recommend the HydraStar Marine Electric Over Hydraulic Actuator part # HS381-9067. This kit comes with everything you need to make the conversion including electric over hydraulic actuator, breakaway switch, 7-way trailer receptacle, junction box, and all of the other hardware and connectors needed for installation. The actuator is constructed of an extruded aluminum which features marine grade gaskets and...
    view full answer...
  • Parts Needed to Convert 2016 Shorelander Trailer to Electric Over Hydraulic Disc
    Can you tell me what axle capacity the trailer has? I don't have the ability to look up trailer component info based on the VIN at this time.
    view full answer...
  • Compatibility of Redarc Tow-Pro and Curt Spectrum Controllers with HydraStar EOH Actuator
    I spoke to my contact at HydraStar who said that the Redarc Tow-Pro Classic # 331-EBRHV2, the Tow-Pro Elite # 331-EBRH-ACCV2, and the Curt Spectrum # C51170 are compatible with the HydraStar Marine Electric Over Hydraulic Actuator # HS381-9067 that you referenced. If you let me know the year/make/model of your tow vehicle I can see if we have specific installation instructions or an adapter available.
    view full answer...
  • Which Hydrastar Electric Over Hydraulic Actuator is for Use with Drum Brakes and for w Disc Brakes
    I really wish there was an easy way to go from a drum to disc brake Hydrastar actuator but you would have to replace the entire actuator. None of the other actuators we carry have this ability either unfortunately. The part # HS381-9067 that you referenced would be the kit to use with disc brakes and then for drums you would need # HS381-9066 which is the drum brake kit equivalent.
    view full answer...
  • What is Needed to Convert Disc Brakes on Older Trailer to Electric Over Hydraulic System
    I have attached a great article that walks through all the parts needed to install electric over hydraulic disc brakes on a trailer, including how to locate the correct assemblies. If you are keeping the trailer's existing disc brake assemblies, and simply converting to an electric over hydraulic system, all you will need is a new actuator and wiring, along with a trailer brake controller for the tow vehicle. For the actuator, I recommend taking a look at the HydraStar # HS381-9067,...
    view full answer...
  • Electric Over Hydraulic Actuator Compatibility with Drum Brakes on Car Trailer
    The HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,600 psi # HS381-9067 is designed for disc brakes only. The pressure of this system is far too high for drum brakes so it will not be compatible. For your car trailer with drum brakes, I recommend the HydraStar Marine Electric Over Hydraulic Actuator w/ Breakaway and 7-Way RV Harness - 1,200 psi # HS381-9066 if the axles are 8,000 lbs or larger. If under 8K axles, then use 1,000 psi # HS381-9065.
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Jeff D
Installed by:
Randy B
Video Edited:
Joshua S
Video Edited:
Kathleen M
Updated by:
Sarah W
Written by:
Amanda M
Test Fit:
Brent H

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