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  4. Drum Brakes
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Hydrastar Electric Over Hydraulic Actuator Kit for Drum Brakes - 1,000 psi

Hydrastar Electric Over Hydraulic Actuator Kit for Drum Brakes - 1,000 psi

Item # HBA-10-252-82
Our Price: $1,013.96
Brake Actuator
Shipping Weight: 21 lbs
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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. 1-800-940-8924 to order Hydrastar brake actuator part number HBA-10-252-82 or order online at Free expert support on all Hydrastar products. Great prices and Fastest Shipping for Hydrastar Electric Over Hydraulic Actuator Kit for Drum Brakes - 1,000 psi. Brake Actuator reviews from real customers.
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Hydrastar Brake Actuator - HBA-10-252-82

  • Electric-Hydraulic Brake Actuator
  • Drum Brakes
  • Hydrastar
  • 1000 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.


  • 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


  • Application: single- or tandem-axle trailers (8,000 lbs or smaller) with drum brakes
    • Requires additional hydraulic line kit (9579-01 - sold separately) for triple-axle trailers
  • Maximum output pressure: 1,000 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.

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
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
Tekonsha90185 ProdigyYes
90885 P2Yes
90195 P3Yes
90160 Primus IQNo
9030 VoyagerYes
ValleyVA32812 BlackbirdYes
VA32811 PhantomYes

Hydra Star Hydraulic Brake Line Kit Parts Diagram

  • (A) 25' 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

HBA-10 Cargo Towing Solutions formerly Carlisle Hydra Star Electric-Over-Hydraulic (EOH) Brake Actuator

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

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

Installation Details HBA-10-252-82 Installation instructions

Customer Reviews

Hydrastar Electric Over Hydraulic Actuator Kit for Drum Brakes - 1,000 psi - HBA-10-252-82

Average Customer Rating:  5.0 out of 5 stars   (3 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.


Quick delivery, great service


It's been a good kit so far!! Had all the supplies I needed when installing it on my 30' float. Worked good on my Alko/kelsey hayes brake kit.



See what our Experts say about this Hydrastar Brake Actuator

  • 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 # HBA16-252-8...
    view full answer...
  • Can Hydrastar Electric Over Hydraulic Kit be Used with Dexter Drum Brakes
    Yes, the Hydrastar EOH drum brake kit part # HBA-10-252-82 does work with Dexter hydraulic drum brakes. Thankfully brake assemblies are all pretty universal with each other so cross compatibility is not an issue.
    view full answer...
  • Can 2022 Tundra OEM Brake Controller be Used with Hydrastar EOH Actuator
    Your 2022 Toyota Tundra's brake controller does have electric over hydraulic mode so it would work just fine with the Hydrastar Electric Over Hydraulic Actuator Kit # HBA-10-252-82.
    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...
  • Electric Over Hydraulic Actuator
    I would need to know the year/make/model of your truck to help you determine that. I've linked a picture of the general fits and the converter that is needed if you want to keep an older model factory controller. We have not had great responses from factory brake controllers with EOH systems, so I recommend upgrading to an aftermarket controller. The Prodigy P3 # 90195 for example has a setting specifically designed for EOH systems that works extremely well.
    view full answer...
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  • Changing Trailer Hydraulic Drum Brakes To Electric-Over-Hydraulic Drum Brakes
    You can use an electric over hydraulic system with drum brakes on your trailer. I have attached a helpful article that explains what is needed when switching to EOH brakes. You will want to install a brake controller like part # 90195 inn your towing vehicle to send the brake signal to the actuator. The hydraulic brake actuator you choose will need to be compatible with drum brakes and the psi output pressdure for the actuator should be matched with the brakes per the manufacturer specs....
    view full answer...
  • Best Way to Convert Surge Drum Trailer Brakes to Electric Over Hydraulic on Boat Trailer
    Since your trailer already has hydraulic brake lines the best kit you'd need to convert the trailer to electric over hydraulic is the part # HS384-9065 which comes with everything you'd need on the trailer side. The actuatur, the battery for the included breakaway, the wiring for upgrading a 7-way etc. is all included and it gives you the most reliable and fastest reacting actuator so it's by far the winner for you.
    view full answer...
  • Does Integrated Brake Controller of 2015 Ford F-150 work with Hydrastar EOH Actuator
    The integrated brake controllers in the 2015 Ford trucks like your F-150 are compatible with the electric over hydraulic actuators like the Hydrastar # HS381-9066 you referenced so it would work fine and not require any additional adapters. This kit however does not come with brake lines and everything needed to install. For that you'd need the part # HBA-10-252-82 instead which does come with that and everything else needed. See attached review video link for more info on this kit.
    view full answer...
  • Recommended Electric Over Hydraulic System for Keystone Montana High Country 5th Wheel Trailer
    As long as your truck's controller has the electric over hydraulic actuator compatibility you won't need to change anything in your truck. If it doesn't there are many options that you can use as a replacement. I recommend the Prodigy P3 # 90195 if you need a replacement. For your Montana High Country 5th wheel trailer, the HydraStar Electric Over Hydraulic Actuator Kit for Drum Brakes - 1,000 psi # HBA-10-252-82 is my recommendation for you. This will give you what you need to your...
    view full answer...
  • Can OEM Brake Controller on 2011 Ford F-350 be Used with Electric Over Hydraulic Actuator
    The OEM controller in your 2011 Ford F-350 is actually very similar to the Tekonsha Prodigy brake controllers so you wouldn't need to add an aftermarket controller unless you absolutely wanted to. There should be a setting for electric over hydraulic (EOH) brakes that you choose for this. If you do decide to use an aftermarket then I highly recommend the Prodigy P2 # 90885 because you will already be somewhat familiar with how to use it. All you need to complete the installation is the...
    view full answer...
  • Parts to Convert Electric Brakes to Electric Over Hydraulic Brakes
    Converting from electric brakes to electric over hydraulic brakes will give you the most effective braking setup available. You are going to need a number of different parts, and the HydraStar Electric Over Hydraulic Actuator Kit # HBA-10-252-82 will give you an electric-hydraulic brake actuator, a brake line kit, and breakaway kit. Because you have a triple axle trailer, you are going to need an additional hydraulic line kit # 9579-01. If you are interested in a new brake controller, the...
    view full answer...
  • Recommended Parts To Convert Trailer From Hydraulic Surge Brakes To Electric Over Hydraulic Brakes
    We do not have a specific kit but I can help you find all of the parts you need to convert your trailer from hydraulic surge brakes to electric over hydraulic brakes. With this conversion, you can choose from hydraulic drum or disc brakes. Generally, disc brakes provide stronger braking action than drum brakes which reduces required stopping distances and increases overall safety. Disc brakes also require less maintenance than drum brakes because they have fewer moving parts. Ultimately,...
    view full answer...

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Info for this part was:

Employee Jeff D
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