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Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi

Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi

Item # HS381-8067
Retail:$999.00
Our Price: $779.95
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Brake Actuator
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Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic brakes. Includes rust-resistant marine-grade gasket and stainless steel hardware. Vented plate releases heat. 1-800-940-8924 to order Hydrastar brake actuator part number HS381-8067 or order online at etrailer.com. Free expert support on all Hydrastar products. Great prices and Fastest Shipping for Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi. Brake Actuator reviews from real customers.
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  • Reviews (39)
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Hydrastar Brake Actuator - HS381-8067

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

Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic brakes. Includes rust-resistant marine-grade gasket and stainless steel hardware. Vented plate releases heat.


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
    • 7-Way trailer connector (sold separately) is needed to transmit 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
  • 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
  • Electronic, proportional pressure valve ensures that braking is smooth and effective
  • Built-in bleeder screw lets you easily flush air out of the brake lines
  • Durable extruded aluminum provides superior corrosion resistance
    • Marine-grade gasket and stainless steel hardware make this ideal for marine use
  • Compatible with any standard, 5-amp-hour-battery breakaway kit (sold separately)
  • DOT compliant
  • Unit installs on trailer frame and connects to trailer's wiring and hydraulic brake lines (sold separately)
  • 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"
  • Dimensions: 11-3/4" long x 3" wide x 7-3/8" tall
  • Wire configuration:
    • Black: 12-volt power
    • Blue: brake controller
    • Yellow: breakaway
    • White: ground
  • 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. Then it splices into the trailer's wiring and connects to your hydraulic brake lines from 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.


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/Chevy2007-2015NoYes
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


381-8067 Cargo Towing Solutions (formerly Carlisle) Hydra Star Marine Grade Electric-Hydraulic (EOH) Actuator - 1600 psi - Model MHBA-16





Customer Satisfaction Score:


Customer Reviews

Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi - HS381-8067

Average Customer Rating:  4.9 out of 5 stars   (39 Customer Reviews)

Anodized aluminum electric-hydraulic actuator lets you use your brake controller (sold separately) to activate your trailer's hydraulic brakes. Includes rust-resistant marine-grade gasket and stainless steel hardware. Vented plate releases heat.

by:

Best move I did was converting to hydraulic disc brakes on my 16,000 lb 5th wheel toy hauler. The stopping power and response is noticeably improved with no fade. along with upgrading to load range G tires, this trailer is a pleasure to tow behind my truck now even in heavy freeway traffic, no longer worried about running over a little car cutting me off. I would not own another heavy trailer without converting to disc brakes.



by:

Great unit, compact size, install wasn’t tough at all, just time consuming since I wanted a clean install. Would have taken me a lot less time had I just thrown it up on top of the frame rail.



by:

I'm impressed. I've pulled a number of trailers with surge brakes over the years and often wondered if they would really work when I needed them. There is no gussing any more with either of my vehicles.
This unit is installed on my boat trailer hauling a 17.5' aluminum runabout and is pulled at times by a small truck as well as an RV that is nearing it's max GCWR pulling the boat.
I chose the Tekonsha Prodigy P3 controller for the actuator and I'm able to easily swap it between vehicles. A great combo.



by:

The reason I gave it only four stars is because the subject Hydrastar Actuator I purchased a year ago replaced the same actuator I installed 2.5 years prior as part of a complete uprade of our Airstream trailer with six disc brakes and the extensive hydraulic lines required to make this triple axle trailer work.
The previous Hydrastar Actuator worked for exactly 5,100 miles. It failed with out any warning during an extensive trip to California and then east to Texas! It simply quit internally. With the help of your company I called the manufacturer; in good modern-day unresponsive fashion I bounced into their voicemail. I realize it was six months beyond the two year warranty period. I did not expect a brand-new one from them. Rather my expectation was that would take mine in and diagnose and rebuild it on my dime or at their cost!? Since I never heard from them and I was planning to sell the trailer and wanted everything to work for the new owner I held my nose and bought the unit you are inquiring about now. I works as designed with about 20 miles on it. The trailer is still for sale as of this writing and will hopefully go to a new owner soon.



by:

I think this one might be the best design on the market. Slim profile makes it easier to tuck out of the way, and the performance is perfect. A very nice way to get away from the coupler actuator and the “clunking” when stopping/starting. Plus have brakes in reverse adds comfort at the boat ramp.



by:

etrailer is great to deal with, with excellent product knowledge and shipping.

Recently converted the surge brakes to Electric over hydraulic on my Tri axle boat trailer.

I was not sure if I needed the adapter for the factory brake controller in my 17 Silverado to work with the Hydrastar marine EOH pump but with one quick question and fast response Etrailer set me straight which allowed for a smooth and simple install.
Although I have not had the opportunity to pull the trailer since the upgrade, I was surprised how small the surge coupler pump was compared to the Hydrastar pump and am looking forward to the faster response time and added control over trailer brakes that this EOH pump with give

Thank you etrailer



by:

Great brake actuator.



by:

Great help by Jamie to get correct controller for disc brakes !



by:

Works perfectly for the application I’m doing.
Once I have it installed…I will update



by:

I've had the Hydrastar system on my trailer now for over a year now with now issues. The brakes work much better than they did before. Easy installation and great service from etrailer



by:

So on the last trailer I converted to hydraulic disc, I used the Titan kit with actuator. This trailer is a cargo trailer for work 14'X8' and not that heavy. I went with Kodiak discs and the Hydrastar actuator. I mounted it inside the trailer to protect it and keep it out of sight. It's so quiet but works flawlessly! Even with the door open, it's tough to hear, so for bleeding, I set up a remote switch to activate the system. It doesn't leak, has plenty of power, and is very smooth coupled with my factory Ford brake controller.. It's been a year, so long time reliability is a wait and see, but so far, I'm very happy.

Rich F.

7/25/2021

Perfectly. The Hydrastar actuator works great. A side note: If you live in a humid environment like I doFlorida, make sure to change the brake fluid every year or two as it does suck up water and get dirty.



by:

Could not figure out why my brake fluid level was always low. No visible leaks until I noticed moisture at the vent near where the wires came out. Contacted HydraStar and within 5 minutes of submitting a pic of the serial number and receipt from etrailer I had a tracking number.

AWESOME product and AWESOME Customer support!!!!!!!

Ronald

8/12/2021

Works perfectly, quality US Made product. Have the same in my Mobile Suites for 6 years with zero issues!



by:

My trailer's stock surge brakes worked pretty well but dragged the brakes driving down hills, did not work while backing down boat ramps, and provided no backup if my vehicle brakes failed... So I got this EOH system to solve those problems.

I only test-drove the finished upgrade once but it seemed to work fine. Note that in my 2018 Ram 1500 with integrated trailer brake control, I needed to set this up as "EOH heavy" even though my boat + trailer are under 6000 lbs.

I wanted a solid, clean install, so I had a bracket made and welded to the trailer out of harm's way and above the possible high water level, even though it's all theoretically waterproof.

Other considerations:
- I was able to re-route the stock steel brake line right to the brake unit.
- I had to buy a new 7 pin trailer harness to replace the stock 5 pin one. I made a conversion harness to go from the new wiring to the stock trailer wiring.
- I locked out the original surge system by replacing its guts (master cylinder, spring, etc) with a steel bar that goes between the front and rear pins.
- I hid the breakaway switch inside the tongue and ran the new breakaway cable where the original one went.
- I safety-wired the brake reservoir cap to prevent its loss or vandalism. It just didn't seem secure to me. Easy fix!

I think it looks good and seems to work well. I expect it will last many years. I gave it only 4 stars as the brakes have some lag (1/2 second?) before I can feel them working. I was led to believe the brakes would be instantaneous and I "would not feel the trailer" (possibly like the electric brakes on my other trailers) but it's not quite that perfect. But maybe I'm being picky! I'd choose this very system again.



by:

My trailer did not have brakes and so I added disc brakes and the HydraStar Actuator. WOW does it work great! No crumby tongue activated brake. This is the best upgrade you could make replacing the clunkey tongue activated brake cylinder. Best money you will ever spend on the boat trailer! Oh by the way "Made In USA".



by:


I bought the electric over hydraulic
for my boat trailer so I could convert from surge brakes to using my electric brake controller. I have a large triple axle trailer that came from the factory with surge brakes. I like the security and adjustable control of an electric controller besides it is the law in certain places when reaching heavier weights... The Hydrastar brand was recommended to my by a friend who had had problems with a different brand and is happy with Hydrastar.
. etrailer has been my "go-to" for all of my boat trailer and car trailer needs for several years. Additionally I always refer my friends to etrailer and they always report back excellent results.
Since we have internet to help with our shopping, I always know I get a good price and quality from etrailer... aside from that the service is excellent as well. Everything I order always shows up on time and usually earlier than expected. What else can I say?
Oh and lets not forget the tech support... sometimes trailer stuff is foreign to me. They are always helpful.
Give em a Brake



by:

BEST MONEY I'VE SPENT. TAKES A LITTLE GETTING USED TO AFTER SURGE BRKS. VERY SLIGHT DELAY, BUT THEN IT HOOKS UP GREAT. ALMOST GOT KILLED IN ATLANTA WITH SURGE BRK LAST YEAR SO THIS WAS A MUST HAVE. CUSTOMER SUPPORT AND SHIPPING WAS A "10" AS IS THE ACTUATOR!!



by:

Easy to install, direct replacement for the one that failed on my PJ Trailer, has worked flawlessly for the last year 10/10



by:

Had a Titan for 5 years that got moisture in the pump and failed. So far so good on the hydrostar. More compact than the Titan.



by:

Install went smooth!!



by:

The brake actuator arrived on time and as advertised. Katie, who took my order was great to work with!



by:

It was a pleasure doing business with y ’all



by:

Bill

3/21/2024

good



by:



by:

she was great!



by:


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Show More Reviews

See what our Experts say about this Hydrastar Brake Actuator

  • Parts Needed To Replace Surge Coupler For Disc Brakes With Electric Over Hydraulic
    Since you already have hydraulic disc brakes on your boat trailer I recommend using the Hydrastar Vented Marine Electric Over Hydraulic Actuator # HS381-8067 versus changing over to electric brakes. The disc brakes are far superior to electric drum brakes and salt water can cause more issues inside the drum brakes than you get with disc brakes. You will also need the Wiring Kit # HS381-9000 and a Breakaway Battery Kit # 3802311 switching to brakes controlled by a brake controller. If you...
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  • Can I Use a Heating Pad on my HydraStar Actuator to Keep Brake Fluid From Thickening?
    Yes. You can use a stick on heating pad like the Kat's # KH24050 to keep the HydraStar Vented Marine Electric Over Hydraulic Actuator # HS381-8067 warmed up and it's not going to damage the system. With that being said, when your brake fluid becomes more viscous like you're describing, it leads me to believe that there is something else going on that is allowing too much water/condensation into your brake lines. It's possible that too much air got into the system at some point and is creating...
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  • Comparing Hydrastar Electric Over Hydraulic Versus Hydrastar Marine Electric Over Hydraulic Actuator
    It sounds like you are comparing the Hydrastar Vented Marine Electric Over Hydraulic Actuator # HS381-8067 and the Hydrastar Electric Over Hydraulic Actuator # HBA16. The Marine # HS381-8067 features stainless steel hardware, a vented end plate, and a sealed housing unit. This is a better option if you are in an area near the ocean which sees a lot of humidity and extreme temperature swings. Otherwise the Standard # HBA16 is going to be all you will need. If you need help finding any brake...
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    Yes, we have everything you need to convert the electric drum brakes on your 2014 Kaufman Car Wedge Trailer to electric over hydraulic disc brakes. In order to do this you are going to need disc brake assemblies, trailer hubs, brake lines, and an electric over hydraulic actuator. For the disc brake assemblies you will want to use the Kodiak Disc Brakes part # K2R1058D11DAC. You will need one kit per axle. For the trailer hubs you will want to use the Dexter Trailer Idler Hub Assembly...
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  • Comparing Dexter DX, BrakeRite II, and Hydrastar Electric-Over-Hydraulic Actuators
    The Dexter DX Series # K71-651 and the Hydrastar Vented Marine # HS381-8067 are more comparable as they both have hardwire installations (just made by different manufacturers) while the Dexter BrakeRite II # T4813102 is more of a "plug-and-play" type installation. Out of these options I highly recommend the Hydrastar Vented Marine # HS381-8067 though because I've had far less troubleshooting questions about their system. As an extra perk, this Hydrastar model has a vented end plate that...
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  • Is the HydraStar Electric Over Hydraulic Actuator Compatible w/ a 2020 Chevy Silverado 2500?
    Yes, it is. The Hydrastar Vented Marine Electric Over Hydraulic Actuator item # HS381-8067 is compatible with the factory brake controller on your 2020 Chevy Silverado 2500HD. You will not need an additional adapter.
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  • Parts Needed to Use the Kodiak Disc Brakes on a Trailer or Motorhome
    For your Kodiak Disc Brakes, part # K2HR858D, you do in fact need a hydraulic actuator and lines. The HydraStar Vented Marine Electric Over Hydraulic Actuator, part # HS381-8067, is a decent choice. However, I recommend part # HBA16-252-82 instead as this one comes with the lines needed to connect to the brakes. I've linked to a video installation of this actuator and lines for you to reference. When it comes to wiring in the actuator, I highly recommend using the Wiring Kit for HydraStar...
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  • Can Electric Over Hydraulic Brake Actuator Be Fully Submerged
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  • Are Kodiak Disc Brake Kits Compatible with Hydrastar 1600 PSI Electric Over Hydraulic Actuators
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  • Brake Controller/Break-Away System for Hydrastar Disc Brake Electric/Hydraulic Brake Actuator
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  • Converting From Electric to Electric over Hydraulic Disc Brakes on Two 7,200 lb Dexter Torflex Axles
    Thanks for the info and we have all the parts you are going to need to convert from electric to electric-over-hydraulic disk brakes, which is the best braking system you can have for a trailer (most stopping power combined with the best overall control). A Dexter Torflex 7,200 lb torsion axle uses inner bearing # 25580, outer bearing # 02475 and grease seal # GS-2250DL. That info, along with the 8 on 6-1/2" bolt pattern, is all we need to know to get you the right set up, and I'll recommend...
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  • Will the HydraStar Electric Over Hydraulic Actuator Part # HS381-8067 Work for Me
    In order to convert the hydraulic disc brakes on your trailer to electric, you will need a electric over hydraulic (EOH) actuator and a breakaway kit. The HydraStar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes part # HS381-8067 is an excellent actuator and will work well with your Tekonsha Prodigy P3 Electronic Trailer Brake Controller part # 90195. For a breakaway kit I recommend taking a look at the Hopkins Engager Push-To-Test Trailer Breakaway Kit with Built-In Battery...
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  • Will 2022 GMC Sierra With Factory Brake Controller Require Hydrastar EOH Adapter
    According to Hydrastar, the # HBA-CAM adapter is not required for the 2018 and newer Chevy/GMC trucks. This is true for the Hydrastar Vented Marine Electric Over Hydraulic Actuator # HS381-8067 and any other Hydrastar model.
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  • Upgraded Suspension and Disc Brakes for 2020 Vanleigh Beacon 39GBB
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  • Does the Hydrastar Marine Electric Over Hydraulic Actuator Work w/ a 2016 Ram OEM Brake Controller?
    Yes, it will. The Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes item # HS381-8067 you were looking at is compatible with the OEM brake controller on your 2016 Ram 2500. Typically the only OEM controllers that had issues were the Actuators were the Ford and GM ones. The Ford and GM factory brake controllers have had issues with the Hydrastar actuators in the past but Ram trucks have always worked just fine.
    view full answer...
  • Availability of Disk Brake Conversion Kit for Tandem 10,000 Pound Dexter Axles
    While there is not an all inclusive kit with everything you need to convert to disk brakes, we do have the necessary parts to put it all together. For a 10,000 lb Dexter axle there are two options. One is the Kodiak Disc Brake Kit # K2R1058D11E which is designed for Dexter axles with oil bath hubs made after May 2013 and the other is the # K2R1058D11HD for those made prior to 2009. These are both slip-on over-the-hub rotors. If you are unable to remove your current hub from the drum you...
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
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Jameson C
Employee Adam R
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Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Kathleen M
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Kathleen M
Employee Dustin K
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Employee Leah S
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Employee Amanda M
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Employee David F
Test Fit:
David F
Employee Manda E
Updated by:
Manda E

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