Brake Actuator

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Dexter Axle

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Electric-Hydraulic Brake Actuator

/

Disc Brakes

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1600 psi

Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi

Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi

Item # K71-651

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Brake Actuator

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K71-651 - 1600 psi Dexter Axle Electric-Hydraulic Brake Actuator
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Electric-hydraulic brake actuator works with your brake controller (sold separately) to activate your trailer's disc brakes. Vented housing releases heat and moisture. Enhanced wiring protection safeguards internal electronics. Call 800-298-8924 to order Dexter Axle brake actuator part number K71-651 or order online at etrailer.com. Free expert support on all Dexter Axle products. Guaranteed Lowest Price and Fastest Shipping for Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi. Brake Actuator reviews from real customers.
  • All Info
  • Reviews (17)
  • Q & A (147)
  • Videos (3)
  • Photos
  • Used (2)
  • Why etrailer?

Dexter Axle Brake Actuator - K71-651

  • Electric-Hydraulic Brake Actuator
  • Disc Brakes
  • Dexter Axle
  • 1600 psi

Electric-hydraulic brake actuator works with your brake controller (sold separately) to activate your trailer's disc brakes. Vented housing releases heat and moisture. Enhanced wiring protection safeguards internal electronics.


Features:

  • Electric-over-hydraulic brake actuator activates your trailer's hydraulic brakes when you apply the brakes in your 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 - activates 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 design releases pressure, moisture, and heat to protect the internal components
    • Allows actuator to be mounted in places where most actuators would overheat
  • Electronic, proportional pressure valve ensures smooth, even braking
  • Self-priming pump reduces time needed for brake bleeding
  • Enhanced wiring detects dangerous current levels and shuts down actuator electronics in the event of a surge
  • Durable aluminum housing and stainless steel fasteners resist corrosion
  • Goretite seals protect the circuit board from the elements
  • Compatible with most 9-amp-hour-battery breakaway kits (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-, and triple-axle trailers with disc brakes
  • Maximum output pressure: 1,600 psi
  • Dimensions: 11" long x 6" wide x 7" tall
  • Distance between mounting holes (center to center):
    • 2-1/2" Between holes on same side of bracket
    • 9-13/16" Between holes on opposite sides of bracket
  • Mounting hole diameter: 1/4"
  • Hydraulic port size: 3/16"
  • Power: 12V DC
  • Wire configuration:
    • Black: 12-volt power
    • Blue: brake controller
    • Yellow: breakaway
    • White: ground
  • 2-Year limited warranty


Dexter DX Series Actuator

The Dexter DX Series electric-over-hydraulic actuator is a dependable choice for your trailer braking needs. It is capable of up to 1,600 psi of pressure output to provide strong stopping power for your disc brakes. The lightweight, corrosion-resistant housing has fins and vents built in to shed excess heat. Inside the housing, the unit features enhanced wiring protection, allowing it to detect dangerous current levels to prevent damage from surges or improper wiring. Another internal highlight is the solid-state electronics, which regulate the actuator's electrical components to ensure consistent performance. All of this is cleanly secured within the aluminum housing by stainless steel fasteners, while Goretite seals protect the internal electronics from exposure to water and other elements. The DX series also remains compatible with most aftermarket and OEM-integrated electric brake controllers on the market.


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

With the DX series 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 setting 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. If you have a proportional brake controller, your brakes will be activated with an intensity that matches the braking speed and power of your tow vehicle.


This gives you multiple benefits over a standard surge-type actuator. Your trailer's braking will be tied to the braking activity of your vehicle instead of the momentum of your trailer. This will help to limit stress on the tow vehicle, and it will give you the ability to reverse without the trailer's brakes kicking in.


You can also activate the manual override on your brake controller to send out full braking power to the actuator. This will activate your trailer's brakes with full intensity. This is especially useful when traveling down steep hills with a fully loaded trailer. In instances like this, the trailer may require maximum braking power to avoid a jackknife situation.


Large Brake Fluid Reservoir and Self-Priming Pump

The large brake fluid reservoir in this actuator ensures that there'll be enough hydraulic fluid to handle a single-, tandem-, or triple-axle trailer regardless of its size. A self-priming pump reduces the time needed for bleeding the brakes and prevents the brake fluid from emptying back into the reservoir when the actuator is not in use.


Dexter DX Series Actuator Installation

Before installing this actuator, be sure that you have an electric brake controller with an output capacity of at least 5 amps.


You will also need enough 3/16" diameter automotive brake line (sold separately) to connect the unit to your brakes.


Mount the actuator level and upright in a dry area on your trailer. It is recommended that you mount the actuator near the front of your trailer. Do not mount it near the trailer axles or at the rear of the trailer.


The Dexter DX Series actuator splices into your trailer's wiring. Follow the diagram below when connecting the wires. 12-Gauge wire is required, but 10-gauge wire is recommended to ensure the best performance.


Wiring Diagram


K71-651-00 Dexter Axle DX Series ElectroHydraulic Brake Actuator - Disc Brakes - 1,600 psi







Video of Dexter DX Series Electric Over Hydraulic Brake Actuator 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 Dexter Axle Brake Actuator - Electric-Hydraulic Brake Actuator - K71-651 Review

Today we're going to take a look at the Dexter electric over hydraulic brake actuator, it has a 1600 psi rating. The electric over hydraulic brake actuator will activate your trailer's hydraulic brakes when you apply the brakes in your tow vehicle. It does require a brake controller to send the signal from the tow vehicle to the actuator, when the brakes are applied. It is compatible with most electronic brake controllers that have the electric over hydraulic brake function. Time based brake controllers are not recommend. The other thing it does require is a 7 way brake connector, that's needed to transmit a signal from the brake controller. The 1600 psi rating is suitable for disc brake applications. As you can see, it has a very large reservoir capacity.

Does use solid state electronics. Does require a 4 wire hookup, and you can see the 4 wires right here. Basically the wire connections are, if you take the yellow wire that connect to the cold side of the brake-away switch, that's the wire that goes hot when a brake occurs. The black wire, that goes to the positive connection on the brake-away switch, that's the wire that charges the brake away battery. The blue wire, that'll go to the output from the in-cab controller, that's the wire that provides power form your brake controller.

The last one is the white one, that's a ground wire. This does require a minimum 9-amp hour brake-away kit. This part will meet or exceed all department of transportation regulations and federal braking requirements. The last thing I want to do is give you some measurements on this. The overall length, pretty much from this end sticking out to this end sticking out is going to be right at about 11 inches. The height on it, from the very bottom to the tallest point, which would be this cap here, probably about 7 inches tall.

The overall width on it, is going to be about 6 inches wide. That should do it for the review on the Dexter electric over hydraulic brake actuator, with the 1600 psi rating.


Customer Reviews

Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi - K71-651

Average Customer Rating:  4.9 out of 5 stars   (17 Customer Reviews)

Electric-hydraulic brake actuator works with your brake controller (sold separately) to activate your trailer's disc brakes. Vented housing releases heat and moisture. Enhanced wiring protection safeguards internal electronics.

- K71-651
by:

Installation was easy. Pump works better the original on my airstream trailer.. 492087


Comments

Works better then the original

George - 04/03/2019

51410

- K71-651
by:

Pleased with the pump. It was used as a replacement on an enclosed trailer with electric over hydraulic brakes. Worked well. 633792



- K71-651
by:

This actuator does exactly what it's designed for. The wiring is very heavy duty and the instructions for connections are printed right on top. The cast aluminum end plates make mounting very easy and the self-priming pump made bleeding the whole system about a 3 minute project. The large reservoir holds plenty of spare fluid and the pump modulates the braking performance in perfect sync with the signal coming from the pump. My Prodigy P3 controller has a setting specifically for hydraulic pump control and it works very will with this pump. 619500



- K71-651
by:

Picture of the hydralic actuator instal led. 97528



- K71-651
by:

these were installed on my Landmark fifth wheel. you have to know what you are doing to install the hydraulic brake actuator and hydraulic lines. But WOW what a difference. I think that my Landmark has more braking power than my pickup truck now. thanks 251011



- K71-651
by:

When the OEM steel brake lines wore out on my boat trailer I decided to upgrade the surge brakes to electric over hydraulic (EOH). I replaced the damaged lines and wired up this Demco actuator and now I can stop my trailer on a dime -- should have done this 10 years ago. The actuator works flawlessly with my 2017 GMC's built in controller -- nothing else was needed! Please note though that the GM controller does not apply the brakes when depressing the pedal if the vehicle is not moving (duh). So don't be surprised if you try to test it sitting in your driveway and think that it's not working -- it's designed that way to save wear on the pump if you're not moving. Pressing the manual control does apply the brakes though. (The brakes also apply if you're on an incline). I fabricated a mounting plate out of 3/8 aluminum since the trailer tongue was not wide enough and attached the pump using 4 countersunk 1/4" stainless bolts and then used two 1/2" square u-bolts to affix it to the trailer. If I set the gain on the truck to max, I can actually lock the trailer's wheels, something that surge brakes can't do on their best day! Back in 2010 I upgraded my disc brakes to Kodiak all stainless steel rotors, mounting plates and calipers -- 8 years old and they were still like new -- also well worth the money! 546209


Comments

Every trailer should be set up like this! Imagine power disc brakes on the trailer, just like your car. Theres a reason that drum brakes arent used anymore. Trailer manufacturers are just too cheap to build then right. Heres your opportunity to fix that!

Doctor P - 07/26/2019

58247

- K71-651
by:

I installed this system on my 18,000 lb tri-axle boat trailer. Installation went very well and everything seems to be a great fit. I will not hook the truck to it until spring but I am very anxious to see the improvement over surge brakes. I was able to make a neat clean install and wiring directions were great. 231861



- K71-651
by:

Together, I couldn't be happier with my setup. The Dexter K71-651 provides more than enough power to stop my little single axle boat trailer and when the emergency break-away is activated, I can't roll the tires by pulling forward, they lock solid. I love the combination of this unit with the Redarc TowPro Elite, and these two have completely changed the way my trailer handles. If I was starting over, I would buy exactly this setup again. Thank you to ETrailer.com for excellent customer service and quick shipping. I received my unit in 2 days, and my entire order was exactly as purchased. They even emailed me on the day it was delivered to ensure I received it! 617921



- K71-651
by:

Used this product to replace a failed ActiBrake sytem. Worked perfectly. Dimensions were almost exact, wiring very simple and thread size was the same. Performance of this product was just as expected. Thank You, etrailer for prompt and precise service and great pricing. 575048



- K71-651
by:

I used this model to replace an older version that ended up failing on our trailer. This version seems to be much stronger than the old. I’m not running the truck controller as high as I use to and I am getting the same breaking power. 616722



- K71-651
by:

Direct fit exactly what I needed 554452



- K71-651
by:

Great product . Fast delivery. Good pri ce 544083



- K71-651
by:

Excellent quality. 384380



- K71-651
by:

Excellent 281545



- K71-651
by:

Item was very easy to install and seems to be working well. I was surprised at how loud the unit is under full activation (e.x. pulling the breakaway switch). Also I found out the hard way that I needed a heavier high temp breakaway switch, as mine started smoking and the wires started to melt when I puled the breakaway during a test. I ordered the Dexter K71-691-00 switch to hopefully resolve the issue. 198524


Comments

Unit works well, Im very pleased with it.

Art - 05/28/2016

18087

- K71-651
by:

1600 PSI electric over hydraulic brake actuator -- very easy installation. Brake Fluid reservoir holds quite a bit and made bleeding the brakes an easier task. Kudos go to eTrailer.com for their quick delivery of the brake actuator - Juanita T was especially helpful in both the selection and follow-up on the product. Special thanks go to her. 139047



- K71-651
by:

I should have had this on my trailer when it was new in '08. The Carlisle one failed after 3 years proving again that I shouldn't buy from them. 93348


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Ask the Experts about this Dexter Axle Brake Actuator

Do you have a question about this Brake Actuator?


  • Brake Controller Solution for 2017 Chevy Silverado that Doesn't Like Electric Over Hydraulic Brakes
  • Factory integrated brake controllers in newer trucks are not always reliable with electric over hydraulic actuators. The newer trucks mostly all say their integrated controllers work with the EOH setups but we've found that it isn't always the case. What you described happening is an example of an integrated controller not working right with the actuator so an aftermarket controller will be your best option. The Prodigy P3 part # 90195 will be your best option. This is our most reliable...
    view full answer...

  • Dexter EOH Disc Brake Actuator Response Time with GM Factory Brake Controller
  • EOH actuators do differ in their response time. From the moment you press the brake pedal the time needed for the pump in the EOH actuator to build hydraulic pressure and push that through your brake lines, through the T fittings, and to your disc brakes can easily be as much as 2 seconds. Longer trailer brake lines and more axles with brakes both can mean the time can be slightly longer for pressure to reach all of the calipers and for you to feel the trailer slowing down. The Dexter...
    view full answer...

  • Parts Needed To Convert a 2017 K-Z Durango Gold G384RLT From Drum to Disc Brakes
  • I have attached for you below a list of parts that you will need to convert your 2017 K-Z Durango Gold G384RLT 5th Wheel Trailer from electric drum to hydraulic disc brakes. If my research is correct, you have two 7,000 lb Dexter Axles but if this is not the case please just let me know. Dexter Disc Brake Kit part # K71-694-695-12 (Grease) or part # K71-694-695-13 (Oil) Dexter DX Series Electric Over Hydraulic Brake Actuator part # K71-651 HydraStar Hydraulic Brake Line Kit part #...
    view full answer...

  • Parts Needed to Convert Trailer with 8k Electric Brakes to 8k Electric Over Hydraulic Brakes
  • Converting from electric drum brakes to electric over hydraulic drum is pretty straight-forward. Basically you swap out the electric brake assemblies for hydaulic ones, you run hydraulic lines and then install an actuator and you'd be all set. For hydraulic brake assemblies you'd want the Dexter Hydraulic Drum Brake Set part # 23-410-411 which is a set that includes one passenger side assembly and one driver side. The actuator kit then to go with is the Hydrastar kit part # HBA-12...
    view full answer...

  • Converting Three 7,000 Pound Dexter Axles to Electric Over Hydraulic Brakes
  • I can certainly help you out with a disc brake set up on your trailer. The first thing we need to find out in order to select the correct parts would be the inner and outer bearing numbers stamped into the sides of the bearings in the hubs you have now. With that information I can ensure that we get you the right parts. I would also need to know the bolt pattern of the wheels and what kind of braking system the trailer currently has. Also, do all 3 of the axles have brake mounting flanges?...
    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...

  • Adding Disc Brakes to 2010 Forest River Cedar Creek Silverback 5th Wheel Trailer
  • The Kodiak Disc Brake Kit # K2HR712D should work great for your 2010 Forest River Cedar Creek Silverback 5th wheel camper. Since this kit is rated for your 7K axles there isn't any concern with having the smaller 1/2" lugs. Most wheels are compatible with both size studs as well. I honestly haven't heard of just a 14125 bearing before so I'd imagine that whoever manufactured your bearing made it to fit the specs for the # 14125A bearing. All you need to do to verify this is measure the...
    view full answer...

  • Will Dexter Electric Over Hydraulic Actuator Work with Factory Brake Controller in 2016 Ford F-350
  • Dexter does state that the electric over hydraulic actuator # K71-651 is compatible will all Ford factory brake controllers so that would include the one in your 2016 Ford F-350. I checked the owner's manual for your truck and it does state that the controller works with some electric over hydraulic systems but doesn't name any specific models.
    view full answer...

  • Troubleshooting Dexter Electric Over Hydraulic Brakes That Hold Brakes Too Long
  • With the Dexter Electric Over Hydraulic Brake Actuator - 1,000 psi # K71-650 or # K71-651, there are some electric brake controllers that don't work as seamlessly as others. The brakes staying engaged for a few seconds after you release the pedal is an indication of a compatibility issue with your controller. If you are using a factory integrated brake controller, that may be the issue. Many of them say they are compatible and yet have some issues like what you stated. I've attached...
    view full answer...

  • Electric Over Hydraulic Brake Actuator Not Applying Trailer Brakes Using Brake Controller
  • Electric over hydraulic brake actuators like # K71-651 only work with certain brake controllers. The brake controller will have to have an electric over hydraulic mode to be compatible. I recommend using the P2 # 90885 or P3 # 90195. Make sure that you have the unit properly grounded to the negative terminal on the trailer battery and to the ground wire on the trailer connector. Check the other wiring connections and make sure they are not corroded.
    view full answer...

  • Can Electric Over Hydraulic Brake Actuator Be Fully Submerged
  • I spoke with my contact at Titan about the BrakeRite II # T4835700. He confirmed that they do not recommend completely submerging the BrakeRite. I also spoke with Dexter Axle to see if their Electric Over Hydraulic Brake Actuators, # K71-651, can be submerged. They confirmed that their actuators are not designed to be fully submerged. Though also not recommended to be submerged, the most likely contender to hold up to being fully submerged is the Hydrastar Marine Grade Electric...
    view full answer...

  • Is a Dexter Elec./Hydraulic Brake Actuator Damaged if it was Ran Dry
  • I spoke with my contact at Dexter and when I explained to him your situation he said you are totally fine. He said that the actuators will be totally fine if they were temporarily ran dry.
    view full answer...

  • Troubleshooting Electric Over Hydraulic Brake Controller That Keeps Running
  • Since you came from a Dexter Actuator I can help you troubleshoot the problem. If you do not have a Dexter unit let me know and I will be glad to see if I can help you out. Most issues are related to wiring or ground problems. Since it sounds like this is not a new installation I don't think it is an issue with the incorrect brake controller in your vehicle. You do want to make sure you are using a brake controller like part # 90885 that is designed for electric over hydraulic systems. Here...
    view full answer...

  • Troubleshooting Electric Over Hydraulic Brakes On 40 Ft Trailer With Dexter Actuator
  • The first thing I recommend is to check the brakes you have on your rear axle. It sounds like they are possibly reversed left to right hand. That would cause the problem you are having with them locking when in reverse and not forward. It sounds like the front brakes are acting correctly since they are designed to allow you to back up without locking up as you mentioned. Next, I recommend testing the breakaway switch. With the breakaway battery fully charged and the trailer plug disconnected,...
    view full answer...

  • Recommended Parts To Convert Surge Brakes To Electric-Over-Hydraulic Brakes On Tandem Boat Trailer
  • Since you have hydraulic brakes on your trailer, there are only a couple things you will need. The first thing I recommend is the Electric Over Hydraulic Brake Actuator, # K71-651. You will want to make sure you mount this unit as far forward on the trailer tongue to avoid getting it submerged. You will need a brake controller for electric-over-hydraulic systems like part # 90195. This is one of our best brake controllers because it is easy to install and operate. The breakaway...
    view full answer...

  • Will Dexter Electric Over Hydraulic Brake Actuator # K71-651 work W Ram Integrated Brake Controller
  • We have found that the Dexter electric over hydraulic actuators like the # K71-651 that you referenced just don't work well with the factory integrated brake controllers like what you have in your 2013 Ram 1500. Sometimes they'll work decently, but for the most part it's pretty inconsistent so we don't recommend this actuator unless the vehicle has a brake controller specifically designed to work with EOH actuators like the P2 part # 90885. Instead of all of that I would recommend you...
    view full answer...

  • Dexter Electric Over Hydraulic Trailer Brake Actuator Will Not Work
  • The click you are hearing is likely not an indication of a problem. With electric over hydraulic actuators you have to use a brake controller that is compatible with and EOH system such as the P2, # 90885 or the P3, # 90195. Otherwise the actuator will not work. Just in case, here are the troubleshooting tips from Dexter: Unit will not run or brakes are slow to respond. To determine if the unit is functioning properly, perform the checks outlined below. 1. Verify that the trailer...
    view full answer...

  • Are Electric Over Hydraulic Trailer Brake Actuators Compatible with Factory Brake Controllers
  • It all depends on which electric over hydraulic actuator you are using. If your truck has an integrated brake controller it might be compatible. But you mentioned having a 2009 2500HD but I do not know if it is a Silverado, Sierra, or Ram. If we are talking factory integrated controllers then GM trucks are not compatible with the HydraStar # HBA16, # HBA-12, or # HBA-10 unless you use adapter # HBA-CAM (which only works with the model HydraStars indicated on its product page). It...
    view full answer...

  • Will Dexter Electric Over Hydraulic Actuator part # K71-651 Work With Integrated Brake Controller
  • The information we have that states that the Dexter Electric Over Hydraulic Actuator part # K71-651 will work with the 2015 GMC Sierra integrated brake controller came straight from Dexter so we know it will fit and work well.
    view full answer...

  • Troubleshooting Leaking After Dexter EOH Actuator for Disc Brakes 1600 PSI Installation
  • Troubleshooting the Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi # K71-651 has a self priming pump to help with bleeding the brakes. It prevents the brake fluid from emptying back into the reservoir when the actuator is not in use. If the actuator itself is leaking brake fluid or oil, then there is a problem with the seal and should be replaced. If there is a leak further down the line, then that is not an issue with the actuator, but rather a brake...
    view full answer...

  • Why do Trailer Electric Over Hydraulic Brakes only Operate if Break-Away Battery is Fully Charged
  • Your Dexter Electric Over Hydraulic Actuator # K71-651 will need your breakaway battery to be fully charged to operate as you've figured out I'm sure. It sounds like the problem is that your 12 volt power circuit on your 7-way is no longer functioning and its not charging the battery so its dying. Most likely there is a blown fuse on your 12 volt trailer circuit and because of that the breakaway battery is dead and your electric over hydraulic actuator is no longer working. The amperage...
    view full answer...

  • Wiring for HydraStar Electric-Hydraulic Actuator for Disc Brakes # HBA16
  • The wiring colors and functions on both actuators are pretty standard so the wiring information for the HydraStar Electric-Hydraulic Actuator for Disc Brakes, # HBA16, will be the same as that for the Dexter Electric Over Hydraulic Brake Actuator, # K71-651. 1. The black wire will connect to the 12V circuit coming from the vehicle's trailer wiring that is always hot. 2. White is the ground. 3. The yellow wire will only supply power when the brake-away pin is pulled. 4. The...
    view full answer...

  • Electric Over Hydraulic Brake Actuator for Triple Axle Trailer with 7K Axles
  • For your triple axle trailer with 7K axles I recommend the Titan BrakeRite II SD, # T4835700. the SD stands for severe duty! With this system I also recommend breakaway kit # T4822100 which was designed for the SD system. If you have a Ford or GM truck with a factory integrated brake controller you will also need adapter # T4845900 so it will work with this electric over hydraulic braking system. If you are using an aftermarket controller make sure that it has an electric over hydraulic...
    view full answer...

  • Will the Dexter Electric Over Hydraulic Actuator Work with Ford Truck Factory Brake Controllers
  • We recently investigated the electric over hydraulic actuators to determine which ones can be used with factory integrated brake controllers. All of them have issues with electric over hydraulic actuators so you are left with 2 options. First, you can use the Titan EHB, # T4813100 (for disc brakes), and use the adapter, # T4846000, so that the unit will work with the factory integrated controllers. The second option would be to replace the brake controllers with models that are compatible...
    view full answer...

  • Electric Over Hydraulic Brakes Don't Work w/Brake Pedal on Newer GM Trucks w/OEM Brake Controller
  • Like you said, many factory integrated brake controllers will not work well with electric over hydraulic trailer braking systems. Some of the newer versions of these controllers now have an electric over hydraulic mode. Check to see if any of your trucks have this mode and, if they do, if the braking starts working with the pedal. Otherwise there are a couple of solutions to solve this issue. First, there may be an adapter that will allow the factory controllers to work but it depends...
    view full answer...

  • Dexter Electric Over Hydraulic Brake Actuator on Gatormade Gooseneck Trailer Not Working
  • I spoke with Gatormade and they informed me that you have a Dexter DX Series Electric Over Hydraulic Brake Actuator part # K71-651. If this actuator is not functioning properly then you will first need to inspect the wiring. This unit receives power from the 12 volt circuit on the trailer connector. I recommend using a multimeter and testing the black wire just before it enters the actuator. If you do not get 12 volts then you would first want to check the "Trailer Battery Charge" fuse...
    view full answer...

  • Dexter Electric Over Hydraulic Brake Actuator Pump Runs But Brakes Do Not Work
  • You will want to start by following the troubleshooting tips in the manual for the electric over hydraulic actuator, # K71-651. I have outlined them here for you: 1. Verify that the trailer and tow vehicle are wired according to the electrical schematic shown in “Electrical Requirements”. 2. Re-bleed the trailer brakes. Any air in the trailer brake system causes brake delay 3. if the trailer is equipped with drum brakes, re-adjust the drum brakes to the trailer manufacturer's recommended...
    view full answer...

  • Electric Over Hydraulic Trailer Brakes not Working w/2015 Chevy Silverado Factory Brake Controller
  • First, on the integrated trailer brake controller on your 2015 Chevy Silverado 2500, make sure that it is in electric over hydraulic mode. Your friend's brake controller and possibly the aftermarket one that you used may not have been compatible with electric over hydraulic brakes. Only certain controllers are, such as the P2, # 90885. There could also be a problem with the trailer, specifically, the actuator. Below are the troubleshooting tips you can try: 1. Verify that the trailer...
    view full answer...

  • Troubleshooting Dexter Electric Over Hydraulic Brake Actuator Pump that Runs But Brakes Do Not Work
  • You will want to start by following the troubleshooting tips in the manual for the electric over hydraulic actuator, # K71-651. I have outlined them here for you: 1. Verify that the trailer and tow vehicle are wired according to the electrical schematic shown in “Electrical Requirements”. 2. Re-bleed the trailer brakes. Any air in the trailer brake system causes brake delay 3. if the trailer is equipped with drum brakes, re-adjust the drum brakes to the trailer manufacturer's recommended...
    view full answer...


Do you have a question about this Brake Actuator?


Used Items Available

Condition: Missing Parts

Notes: Unit has a small corner broken off one of the ends, right through one of the mounting holes. There is no other damage to the unit. Still has three mounting holes and something could be fabricated to make it mount on that side.

Our Price: $532.69

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Condition: Installed

Notes: Item has been previously installed/testfitted and has minor cosmetic install marks.

Our Price: $585.76

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    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate brake actuator information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Expert Research:
Mike L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Reno H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Brandon M
Expert Research:
Adam R
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Video by:
Joshua S
Video Edited:
Dustin K
Updated by:
Sarah W
Updated by:
Jenny M
Updated by:
Brian T
Updated by:
Mike S
Installed by:
Brent H
Test Fit:
David F

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


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