HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi

HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi

Item # HBA16-252-82

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Hydrastar Brake Actuator - HBA16-252-82
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  • Electric-Hydraulic Brake Actuator
  • Disc Brakes
  • Hydrastar
  • 1600 psi
Electric-hydraulic brake actuator with brake lines lets you use an electric brake controller from inside your vehicle to adjust and control your trailer's hydraulic brakes. Enjoy convenience as you achieve greater braking control and performance. Call 800-298-8924 to order Hydrastar brake actuator part number HBA16-252-82 or order online at etrailer.com. Free expert support on all Hydrastar products. Guaranteed Lowest Price and Fastest Shipping for HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi. Brake Actuator reviews from real customers.


  • All Info
  • Reviews (7)
  • Q & A (28)
  • Videos (3)
  • Photos
  • Why etrailer?

Hydrastar Brake Actuator - HBA16-252-82

Electric-hydraulic brake actuator with brake lines lets you use an electric brake controller from inside your vehicle to adjust and control your trailer's hydraulic brakes. Enjoy convenience as you achieve greater braking control and performance.


Features:

  • Electric-hydraulic brake actuator lets you use an electric brake controller from inside your vehicle to adjust and control your trailer's hydraulic brakes
  • Responds to commands from in-cab electric brake controller (sold separately) to apply trailer brakes
    • Activates trailer brakes when you apply brakes in tow vehicle
  • Includes brake line kit and standard breakaway kit
  • Gives you greater control over your trailer's brakes than that provided by standard hydraulic actuators
    • Faster response time
    • Proportional braking for smooth, effective stops
    • Quick adjustment when you change trailers or loads
  • Overcomes problems associated with standard surge brake actuators
    • No interference when you back up, even uphill - no more getting out of your vehicle to lock out brakes
    • No brake drag or pushing sensation, which can occur with surge brakes when you drive downhill
    • Improved safety - allows use of manual override feature that is included with most electric brake controllers, so you can engage the trailer brakes without having to apply your vehicle brakes
  • Constructed of extruded aluminum to resist corrosion
  • Includes built-in bleeder - lets you easily flush air out of your brakes
  • Installs on trailer, connecting into trailer's wiring and hydraulic brake lines
  • Made in the USA


Specs:

  • Application: single- or tandem-axle trailers with disc brakes
    • Requires additional hydraulic line kit (9579-01 - sold separately) for triple-axle trailers
  • Maximum output pressure: 1,600 psi
    • Check with trailer brake manufacturer for pressure specifications
  • Vehicle requires the following (sold separately):
    • In-cab electric brake controller
    • 7-Way, blade-style trailer connector mounted near the bumper (HS381-9000)
  • Actuator dimensions: 11-3/4" long x 3" wide x 7-3/8" tall
  • 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. You will get responsive hydraulic braking, which you control conveniently from inside your vehicle with your electric brake controller.


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 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 Construction

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.


Brake Controller Compatibility

Not all electric trailer brake controllers 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 ControllersDrawtite5500 Activator IIYes
5510 Activator IIYes
Hayes81741B Energize IIIYes
81760 EngageYes
81792K G2Yes
81725 SyncronizerYes
81770 EndeavorYes
HopkinsImpulse Digital 47325Yes
Insight 47297Yes
Brake Force 47225No
Reliance 47284No
Agility 47295No
MaxbrakeBrake ControllerYes
RedneckRedline TA900Yes
RedlineTA900ANo
RedlineTA1000No
RedlineTA1100No
RedlineTA1200No
Tekonsha90185 ProdigyYes
90885 P2Yes
90195 P3Yes
90160 Primus IQNo
9030 VoyagerYes
ValleyVA32812 BlackbirdYes
VA32811 PhantomYes

Hydra Star Hydraulic Brake Line Kit Parts Diagram

  • (A) 30' Long brake line - 3/16"
  • (B) 6' Long brake line - 3/16"
  • (C) 4-1/4' Long brake line - 3/16"
  • (D) 1-1/2' Long male/female flex line - 3/16"
  • (E) 3/16" Brass X-fitting
  • (F) 3/16" Brass T-fitting
  • (G) 3/16" Brass union


381-7067 Cargo Towing Solutions formerly Carlisle Hydra Star Electric-Over-Hydraulic (EOH) Brake Actuator

496-252 Hydra Star Hydraulic Brake Line Kit - Tandem Axle - 30' - 3/16" - Model BL-25T

496-82 Hydra Star Breakaway Battery Kit - 5 Amp/Hr - Model HBA-BA



HBA16-252-82 Installation InstructionsInstallation Details HBA16-252-82 Installation instructions


Video of HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi


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




Video Transcript for Hydrastar Brake Actuator - Electric-Hydraulic Brake Actuator - HBA16-252-82 Review

Today we're going to take a look at the HydraStar electric over hydraulic actuator kit for disc brakes. Has a 1600 psi rating. This electric over hydraulic brake actuator will let you use an electric brake controller from inside your vehicle to adjust and control your trailer's disc brakes. It'll respond to the commands from that end cap electric brake controller to apply the trailer brakes. Basically, it activates your trailer brakes when you apply the brakes in your tow vehicle. Now, this kit does include the brake line kit here, for single or tandem axle trailers. It will also include this push to test breakaway kit that has an integrated charger with the battery, and even the breakaway switch.

Now, this will give you greater control over your trailer brakes than provided by your standard hydraulic actuators. First, it'll give you a lot faster response time, gives you a lot more proportional braking for smooth, effective stops, and it's a quick adjustment when you change trailers or loads. You can overcome a lot of problems associated with those standard surge brake actuators. There's no interference when you back up, even uphill, so no more getting out of your vehicle to lock out the brakes, and there's no brake crag or pushing sensation which you can usually get with surge brakes when you're driving downhill. The improved safety on this one will allow the use of a manual override feature. That's included with most of your electric brake controllers, so that you can engage trailer brakes without having to apply your vehicle brakes. The actuator itself is constructed of a extruded aluminum, to help resist corrosion.

Does include the built-in bleeder valve right up here at the top. This will let you easily flush air out of your brake. When you do install this on your trailer, the wires here you can see will connect to your trailer's wiring, and in the very front, you'll see there's a output. This is where your hydraulic brake line will connect. Now, these parts are made in the U.S.A. A few specs on this: the application is for single or tandem axle trailers with disc brakes.

Now, you can use this also on a triple axle trailer, but it will require an additional hydraulic line kit for that third axle. We do sell that separately. It's part number 9579-01. Now, in this actuator, again, the maximum output pressure is 1600 psi. What I would always recommend is check with your trailer brake manufacturer for the pressure specifications. Once you use this kit, the vehicle will require the following that we do sell separately: an in-cab electric brake controller that I mentioned.

If you already have one, you can use that one. If not, we do sell them on our website. Also, make sure you have a seven way blade style trailer connector mounted near the bumper on the rear of your vehicle. Last thing I want to do is just give you a couple of dimensions on this. Going to give you a total length, and I am going to include the brackets, the mounting brackets at the very bottom. The overall length is right at 11 and three-quarter inches. The height, from the bottom to the top, that's the highest point is the cap right here. Again if we . That's tilted just a little bit. From the bottom to the very top is going to be right at 7 and three-eighths inches tall. The width of it, at the widest point is going to be right at 3 inches wide. That should do it for the review on the HydraStar electric over hydraulic actuator kit for disc brakes with a 1600 psi rating.


Customer Reviews

HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi - HBA16-252-82

Average Customer Rating:  5.0 out of 5 stars   (7 Customer Reviews)

Electric-hydraulic brake actuator with brake lines lets you use an electric brake controller from inside your vehicle to adjust and control your trailer's hydraulic brakes. Enjoy convenience as you achieve greater braking control and performance.

- HBA16-252-82
by:

Pat C was very helpful and patient. I received all my packages two days after ordering. Thanks for your great costumer service. 573652



- HBA16-252-82
by:

Still one of the best trailer related purchases I ever made!!! 579617



- HBA16-252-82
by:

Was a great tease, received box 4 of 4 and had to wait until Monday for the rest to arrive, the boxes were a bit hammered, and when a caliper mount bolt fell out I was worried how many other bolts had gotten lost, but everything was there. Service was great, free shipping, these were heavy boxes, and they are tough to pack well so they don't pop open. Thanks to the order staff and especially Sammi G for getting my order straightened out from my miss ordered parts, will be ordering my trailer parts from them again! 499961



- HBA16-252-82
by:

This brake kit has held up very well! It came with plenty of adapters, tees, hoses, and pipe to make hydraulic brakes a reality on any two-axle trailer. I bought hoses and pipe for a third trailer and the brake actuator has no problem stopping my fully-loaded stacker trailer with three axles. 603262



- HBA16-252-82
by:

Perfection 505370



- HBA16-252-82
by:

Like the disc brake over the drums they work great. But they need to sell them as a kit for the different axle sizes instead of pieces. Other then that they are worth the money. 455990



- HBA16-252-82
by:

I can't say enough good things about the staff at etrailer. They helped me pick out the correct items to install disc brakes on my boat trailer and the technical staff was extremely helpful in helping me better understand how to perform the installation. This was the first time I ever install a new brake system and their help enabled me to easily and successfully complete the installation. A+ for the product quality and for etrailer staff! 400359


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Ask the Experts about this Hydrastar Brake Actuator
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  • How to Convert Dexter 10k Drum Brakes to Electric Over Hydraulic Disc
  • We have just what you would need. For idler hubs you would first need to start with the part # 8-214-5UC1 (if you don't have these already) and then to install a disc brake kit specifically for these hubs you would need the part # K2R1058D11 for each axle. This is a Dexter 10k oil bath setup just like what you have. For an electric over hydraulic drum actuator for your trailer you would want the part # HBA16-252-82. That comes with everything electronically. For a 30 foot long tandem...
    view full answer...

  • Converting Dexter # 11 Nev-R-Lube Electric Drum Brakes to Hydraulic Disc
  • The Dexter Torflex 11 axles are rated between 4,100 and 6,000 lbs which is what the rotor # ROTOR-HUB-12XL is designed to fit. Since you have the Nev-R-Lube cartridge style bearings too this would be an exact fit too. Instead you might want the kit part # K71-647-648 which comes with everything else that you'd need like mounting brackets, calipers, brake lines etc. For an actuator kit I'd recommend the Hydrastar kit part # HBA16-252-82 as it comes with our most reliable and quickest...
    view full answer...

  • Parts Needed to Convert Drum Brakes of Grand Design Solitude 310GK to Disc
  • Since we know you have Lippert 7k axles we know exactly what disc brake kit you'll need to convert your trailer from drum to disc. Best option is the Dacromet coated kit from Kodiak part # K2HR712D which is a direct fit for your 7k axles. Then for an actuator kit that includes brake lines for a tandem axle trailer the HydraStar kit part # HBA16-252-82 would be exactly what you need. It also comes with a breakaway kit and brake lines too. This actuator will work great with your Chevy...
    view full answer...

  • Recommended Disc Brake Components for Nuwa Hitchhiker 5th Wheel Trailer Conversion
  • For your Nuwa Hitchhiker 5th wheel, I recommend you start with the Kodiak 12" Hub-and-Rotor Assembly - 6 on 5-1/2 - E-Coat # KHR12E. For this assembly you will need the bearing kit # Bearing Kit # BK3-100. For your grease caps you will need # RG04-060 which come in sets. For your calipers, I recommend the Kodiak Disc Brake Caliper - Dacromet# KDBC225DAC along with the mounting bracket # KCMB12D and brake pads # K225CP. For your brake lines and your Electric Over Hydraulic actuator,...
    view full answer...

  • Parts Needed to Add Electric Over Hydraulic Brakes to Trailer
  • Actually your Tekonsha Voyager part # 39510 is not compatible with electric over hydraulic brakes. You would need to upgrade to a controller that is compatible like the Tekonsha P2 part # 90885. I attached a help article that covers everything on adding electric over hydraulic brakes to a trailer for you to check out but it looks like you are otherwise on the right track. The Hydrastar # HBA16 is the best all-around actuator as our installers like how quick it reacts to braking signal...
    view full answer...

  • Kodiak Disc Brake Kit Recommendation for Trailer with Dexter 7,000 lb Axles
  • For your trailer that has Dexter 7,000 lb capacity axles the Kodiak Disc Brake kit I recommend is the part # K2HR712D. You'll need the seal part # RG06-070 and the bearings part # 25580 and # 14125A and you'll be set. I recommend this kit because all of the components are Dacromet coated which means they'll do an excellent job resisting corrosion. Then for the actuator kit you'd want the HydraStar setup part # HBA16-252-82. This comes with the needed brake lines and breakaway kit to...
    view full answer...

  • Electric Drum and Hydraulic Drum to Disc Brake Conversion Kits
  • I am not sure if you are looking to convert from an electric drum brake to a hydraulic disc brake or from a hydraulic drum brake to a hydraulic disc brake but I will provide my recommendations for each option below. Electric Drum to Hydraulic Disc: Kodiak Disc Brake Kit part # K2HR526D (6 on 5-1/2") HydraStar Electric Over Hydraulic Actuator Kit part # HBA16-252-82 (Single/Tandem Axles) Hydraulic Drum to Hydraulic Disc: Kodiak Disc Brake Kit part # K2HR526D (6 on 5-1/2") HydraStar...
    view full answer...

  • Disc Brake Kit Recommendation for EZ-Loader Trailer w/3700 lb Single Axle
  • Your spindle dimensions are the standard 3,500 lb axle dimensions which is exactly what the Kodiak Disc Brake Kit # K2HR35DKG that you referenced is designed to fit so this kit will fit and work well for you. This kit would work really well for a saltwater/freshwater application. The Dacromet and KodaGuard finish do an excellent job preventing corrosion. The bearings and seals of this kit are sold separately so you'll need the part # RG06-050 for seals and part # L68149 and # L44649 for...
    view full answer...

  • Recommended Disc Brake Kit for AL-KO 6,000 lb Axles
  • For your AL-KO 6,000 lb axles, you will want the Kodiak Disc Brake Kit # K2HR858AE that will fit the same #42 spindles used on that axle. This kit will give you the calipers, discs, and oil cap, but you will need to get the bearings and seal separately. For the inner bearing you will use # 25580, and you'll use # 02475 for the outer bearing. The seal needed is # RG06-070 sold in the pair. For your brake lines and Electric over Hydraulic actuator, I recommend the HydraStar Electric...
    view full answer...

  • Disk Brake Kit and Electric Over Hydraulic Actuator Recommendation to Fit Dexter 5,200 lb Axles
  • Yes, the Kodiak Disc Brake Kit # K2HR526DS that you referenced will fit a Dexter 5,200 lb axle like yours as that is what it was designed to fit. This kit has stainless steel and dacromet coated components so it will last a very long time and will be very reliable. The bearings needed are sold separately but are # 25580 and # 15123. The EOH kit you would want is the HydraStar EOH Actuator Kit part # HBA16-252-82. The Hydrastar actuators are the most reliable and best performing actuators...
    view full answer...

  • Will Dexter Disc Brake Kit # K71-694-695-13 Work on Trailer with 7k Axles
  • Yes, the Dexter Disc Brake Kit # K71-694-695-13 that you referenced is confirmed as a fit the 7k axles you have that use slipper springs. This comes with all of the needed bearings, races, and seals needed to install as well. Brake lines and actuators are sold separately so you'd need something like the HydraStar kit part # HBA16-252-82 which comes with the brake lines needed for a tandem axle trailer, wiring, the best actuator available, and a breakaway kit. I attached an install video...
    view full answer...

  • Parts Needed for Electric to Disc Brake Conversion on 2019 Grand Design Reflection Travel Trailer
  • We have disc brake conversion kits for your 2019 Grand Design's 5200-lb axles that are shown on the linked page. A complete hub-and-rotor kit like # K2HR526D completely replaces your existing hubs with new 6-on-5-1/2 hub/rotors and includes the calipers and pads. To select the right kit you'll need to match the wheel bolt pattern, wheel size and the hub bearing set to your existing setup. Disc kits for any given axle weight rating come in various finishes. An all stainless-steel kit...
    view full answer...

  • Recommended Conversion from Hubs with Drum to Oil Bath Disc Brakes on 8,000 lb Axle
  • If you have a Dexter 8,000 lb axle then you can easily convert from drum brakes to disc brakes with the oil bath. I recommend the Dexter Disc Brake Kit - 12-1/4" Hub/Rotor - Oil - 8 on 6-1/2 - E-Coat - 8,000 lbs # K71-635-91 which comes with the bearings and oil seal you need. Then I recommend the Kodiak Synthetic Bearing Oil for Oil Bath Hubs - 8 oz Bottle # XLPROLUBE. If you currently have hydraulic drum brakes, then updating the master cylinder to the disc brake version is all...
    view full answer...

  • How to Add Disc Brakes to a 2018 Keystone Montana 3811MS
  • In order to add disc brakes to your 2018 Keystone Montana 3811MS you are going to need a disc brake assembly, brake line kit, and electric over hydraulic actuator. Please also keep in mind that you will need a brake controller that is compatible with the electric over hydraulic actuator. If you do not know if your brake controller is compatible with an electric over hydraulic actuator you can find the compatibility chart listed on the product page for the electric over hydraulic actuator...
    view full answer...

  • Recommended Disc Brake Upgrade for 2010 Cameo Trailer by Carriage
  • Your 2010 Cameo by Carriage can have the axles upgraded and disc brakes added, but you would need to contact the manufacturer to ensure your capacity would be increased because it will be based on the weakest component. We don't carry any disc brake assemblies for the 9K axles, but we do have the 8k and 10K options. I've attached an article to assist with upgrading to EOH disc brakes. My recommendation is to keep your current Dexter axles and add the Dexter Disc Brake Assembly - 12-1/4"...
    view full answer...

  • 2016 Chevy Factory Integrated Brake Controller Compatibility With Electric Over Hydraulic Actuators
  • The factory brake controller in your 2016 Chevy 3500 is compatible with all of our Electric Over Hydraulic Actuators when you use the HydraStar Electric Over Hydraulic Actuator Adapter Module for Ford and Chevy Brake Controllers # HBA-CAM. This will work with any of our EOH actuators to ensure a good connection without error messages. My recommendation is to use the HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi # HBA16-252-82 or the Kit for Drum Brakes...
    view full answer...

  • Recommended Conversion from Electric Drum Brakes to Electric Over Hydraulic Disc Brakes
  • The Kodiak Disc Brake Kit - 11" Rotor - 8 on 6.5 - Raw Finish - Leaf Spring - 12K - Dexter/Lippert # K2R1258L12 is the option for dual wheel axles and will use idler hubs compatible with your axles for mounting the wheels. Then I recommend the HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi # HBA16-252-82. If you need help in getting the correct idler hubs for this conversion, you can pull one of your current brake drum hubs and get the bearing numbers off...
    view full answer...

  • Kodiak Disc Brake and Actuator Kit Recommendation for 8,000 lb Trailer Axle
  • Dexter does offer 8k axles but at this time we do not offer any. We do however have 8,000 lb axle disc brake kits from Kodiak that you could use like the part # K2HR89DD. Then for an actuator kit the HydraStar actuators are the best around. For a kit that comes with this actuator, brake lines, and a breakaway kit you'd want the part # HBA16-252-82. To pick out the axles you'll need you'll need to find a local trailer shop who can order them in and get them the hub face to hub face...
    view full answer...

  • Best Electric Over Hydraulic Actuator Kit for Single Axle Trailer Recommendation
  • The best electric over hydraulic actuator kit we offer that includes brake lines is the HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes # HBA16-252-82 which is designed for trailers that are single or tandem axle. There would just be a few lines and fittings you wouldn't need to use. We have found that the Hydrastar actuators are by far the most reliable and best performing is why we recommend them so highly.
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  • Are Kodiak Disc Brake Kits Compatible with Hydrastar 1600 PSI Electric Over Hydraulic Actuators
  • Absolutely! Disc brake kit # K2HR35D is compatible with the Hydrastar 1600 psi actuators including # HBA16, # HS381-9067, # HS381-8067, and kits with lines, # CAR-HBA16-2 and # HBA16-252-82. It will also work older models as long as they were designed to be used with disc brakes.
    view full answer...

  • Mounting Screws Keep Breaking off for HydraStar Electric Over Hydraulic Actuator Kit # HBA16-252-82
  • Glad to hear that the HydraStar Electric Over Hydraulic Actuator Kit # HBA16-252-82 is working great for you! What is most likely happening is that you are over torquing the screws. If you get them too tight that will actually damage them so that they break as you described. I spoke with my contact at HydraStar who agreed that this would be the case and actually said that he has done the same thing at his shop.
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  • Where to Place the Four Loom Clamps to Support Brake Lines in Kit HBA16-252-82
  • In short; they're not secured to the trailer frame. Presumably you would strategically place the loom clamps near those fittings you mentioned from kit # HBA16-252-82 to limit any movement of those fittings. The rigidness of the metal lines will help keep those metal lines in place so the clamps would not be needed for the metal lines. We do have other loom clamps if you want more, # A0500 for 1/2 inch and # A0250 for 1/4 inch. We also have clips, # T0936600, for more brake line support. I...
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  • Parts Needed to Convert 2001 Holiday Rambler Alumascape to Electric Over Hydraulic
  • We can help get you setup, but I'll need to know the axle capacity you'd need for your trailer. Do you know what the axle capacities are of the trailer? Are you going from electric drum to disc? Are you wanting to go to electric over hydraulic?
    view full answer...

  • Electric Over Hydraulic Actuator Recommendation and Guide for Adding Them to Boat Trailer
  • I attached two links down below the product links. They are guides for adding electric over hydraulic brake setups to a trailer like you mentioned. One covers drum brakes and the other disc. Putting brakes on one axle of a tandem trailer is a popular setup we see quite a bit. Normally for boat trailers this it would be the rear axle. We really like the Hydrastar actuators like the part # HBA-10-252-82 for drum brakes that comes with lines and a breakaway or the disc brake version...
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  • Difference Between HydraStar Electric Over Hydraulic Brake Kits # CAR-HBA16-2 and # HBA16-252-82
  • The hydraulic brake line kits between HydraStar EOH kits # CAR-HBA16-2 and # HBA16-252-82 are different. System # CAR-HBA16-2 includes: (1) 15' Long brake line (1) 6' Long brake line (2) 4-1/4 Long brake lines (4) 18" Male/male rubber flex lines (1) 3/16" Brass T-fitting (2) 3/16" Brass union fitting (1) 3/16 Brass X-fitting (8) 3/8"-24 Inverted flare nuts (4) 1/2" Nylon hose clamps (14) 3/16" Nylon hose clamps (18) Self-tapping screws System # HBA16-252-82 (1) 30' Long...
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  • Parts Needed to Change Electric Brakes on a Tandem Axle Trailer to Electric-Over-Hydraulic Disc
  • For a disc brake assembly I recommend going with the Kodiak Disc Brake Assembly # K2HR712DS for 1/2" diameter studs or Kit # K2HRCM1337-9DAC for 9/16" diameter studs. Both of these kits are for 7,000 lb trailer axles. For the inner bearing use part # 25580, outer bearing use part # 02475, and grease seal use part # RG06-070. If you have two 3,500 lb axles on your trailers I recommend the Titan Disc Brake Assembly # T10HREKITBB (2 for each axle) which comes with inner bearing # L68149,...
    view full answer...


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Info for this part was:

Expert Research:
Michael H
Installed by:
Jeff D
Expert Research:
Jameson C
Video Edited:
Joshua S
Video Edited:
Kathleen M
Written by:
Laura H
Installed by:
Randy B
Photos by:
Zach O
Test Fit:
Shane H
Updated by:
Kristina F
Video by:
Michael B

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