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Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes - 1,000 psi
Dexter

Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes - 1,000 psi

Part Number: K71-650
$818.70
Retail:$1,070.50
You Save: $251.80
Brake Actuator
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Electric-hydraulic brake actuator works with your brake controller (sold separately) to activate your trailer's drum brakes. Vented housing releases heat and moisture. Enhanced wiring protection safeguards internal electronics. 1-800-940-8924 to order Dexter brake actuator part number K71-650 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes - 1,000 psi. Brake Actuator reviews from real customers.
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Dexter Brake Actuator - K71-650

  • Electric-Hydraulic Brake Actuator
  • Drum Brakes
  • Marine
  • Travel Trailer
  • Dexter

Electric-hydraulic brake actuator works with your brake controller (sold separately) to activate your trailer's drum 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 drum brakes
  • Maximum output pressure: 1,000 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 1,000 psi of pressure output to provide strong stopping power for your drum 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


K71-650-00 Dexter Axle DX Series ElectroHydraulic Brake Actuator - Drum Brakes - 1,000 psi





Customer Satisfaction Score:


Customer Reviews

Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes - 1,000 psi - K71-650

Average Customer Rating:  4.6 out of 5 stars   (28 Customer Reviews)

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

by:

Got my Brake Actuator so fast. I love that these guys have so much stock, amazing prices, and do customer service the old fashioned way!!! Thank you etrailer.com??



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We never got it to operate properly. We ended up removing the entire hydraulic system and replaced it with electric brakes.



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I would rate customer service at 5, products at 4 only because I haven't installed them yet and shipping at 1 because electric brake controller was boxed with jack and hitch both heavy items and box was ripped open from shipping which is not your fault but controller was pinched between jack and hitch.



by:

This 1000 PSI actuator works great on my tadnem trailer. Also the OEM controller in the 2016 Ram 5500 works very smoothly on the braking of this unit. No Problems



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excellent for your quick response



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Easy ordering and quick shipping



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Great price and arrived earlier than expected. Etrailer does not disappoint!



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Jamie

7/8/2024

No complaints. Customer seems to still be pleased with it on his horse trailer.



by:

Replaced same part with this new one and it works as it is designed.



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The E stands for everything available



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Great product awesome price fast shippi ng



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Best thing I ever did I got breaks now



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Excellent customer service and shipping was very fast



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Fast



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As advertised quick shipping



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Loved



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See what our Experts say about this Dexter Brake Actuator

  • Which is Better Dexter or Hydrastar Electric Over Hydraulic Trailer Brake Actuators
    With our experiences installing and using the various electric over hydraulic actuators out there the consensus is that the Hydrastar actuators have the quickest response time and are the most reliable. All of our installers when asked will say that the Hydrastar is the way to go. While that's not technical info like you mentioned it's real world experience that you'd be able relate better to. So the # HBA-10 is for up to two axle trailers that are rated for up to 7,000 lb axles (each)....
    view full answer...
  • Brake Line Kit Recommendation for a Trailer with Tandem Drum Brakes and a Dexter K71-650 Actuator
    To make it easy, you should get a Deluxe Hydraulic Line Kit # 9579-2. This kit was designed for tandem axle trailers with drum brakes like yours and will work with your Dexter Electric Over Hydraulic Brake Actuator # K71-650. All the lines in this kit are 3/16 inch. The Dexter Electric Over Hydraulic Brake Actuator, # K71-651, is not compatible with the Ford integrated trailer brake controllers. The adapters made for other systems are not designed to be used with the Dexter EOH systems....
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  • Parts Needed to Convert From Hydraulic Drum to Electric Over Hydraulic on 2005 GMC Sierra 2500
    We can get you everything you need to go from hydraulic drum brakes to an electric over hydraulic set up for your trailer and 2005 GMC Sierra 2500. You'll need an EOH actuator, breakaway kit, and brake controller that is compatible with an EOH set up. First, for the actuator and breakaway kit you'll need the following: - Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes # K71-650 - Bright Way Push-to-Test Trailer Breakaway Kit # 3802311 Then for the brake controller...
    view full answer...
  • Are Dexter E/H 1000 Brake Actuators Available
    Yes, we currently offer the Dexter DX Series Electric Over Hydraulic Brake Actuator # K71-650. This actuator is designed for use with hydraulic drum brakes and has a max psi rating of 1,000psi. If you're needing any other components or have any other questions then please send in another question through our "Ask the Expert" link and I'd be happy to help you.
    view full answer...
  • Can I Use the Dexter DX Brake Actuator To Convert Drum Brake to EOH On Triple Axle Trailer
    The Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes part # K71-650 will work well to actuate your drum brakes on the triple axle trailer when you switch over to electric over hydraulic brakes. You will also need a brake line kit. The longest brake line kit we have available is HydraStar Hydraulic Brake Line Kit - Triple Axle - 25' Long, 3/16" Main Line part # HS496-253. I do not believe this line kit will be long enough but I do not know how far back your axle. If...
    view full answer...
    Image 1 for
  • What is Needed To Use 2011 Chevy Factory Brake Controller With Dexter EOH Brake Actuator # K71-650
    The Adapter Module for BrakeRite Electric Over Hydraulic Actuator - OE Ford, GM Brake Controllers Item # DX35FR, is an adapter that will work with the Titan BrakeRite EHB actuating system, the Dexter DX series and the factory GM or Chevy brake controllers. You could also look at an aftermarket brake controller like the Tekonsha Prodigy P2 Brake Controller, part # 90885, that will work with electric over hydraulic brakes. This brake controller is our best selling controller and is easy...
    view full answer...
  • 3/16 inch to 1/4 inch Thread Adapter for Use with Dexter EOH Actuator K71-650
    The male thread of the Replacement Adapter Fitting # T4871700 being longer would not be an issue when installing it in the back of the Dexter actuator part # K71-650. Pressure from the male side flare fitting to the actuator is what seals it so the threads being longer would not be an issue.
    view full answer...
    Image 1 for
  • Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes Won't Run
    I checked with Dexter and there are quite a few different possibilities of what the issue could be for the Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes # K71-650 not running. You said all the wiring looks good, but it is important to test the actuator, and there is a specific way to do this. Detach the wires leaving the blue, yellow, black, and white wires loose. Then use a 12 volt battery connect the white wire to the negative terminal and the black wire to...
    view full answer...
  • Recommended EOH Actuator for Use with 2016 Ram 3500 Factory Brake Controller
    Yes, the Dexter 1000-PSI Drum Brake Actuator # K71-650 will work fine with the factory-installed trailer brake controller in your 2016 Ram 3500 pickup. It will work with all model years without the need for any additional parts or adapters.
    view full answer...
  • Recommended Electric Over Hydraulic Actuator for Drum Brakes
    I have a soluton for you, but the Dexter EOH Actuator # K71-651 is designed for disc brakes and the pressure generated for those would damage the components of drum brakes. Instead I recommend using the Dexter # K71-650 which has 1000 psi and is designed for use with drum brakes. You can use your existing drum brakes and lines with this actuator. If you don't already have an EOH compatible brake controller, please let me know what your tow vehicle is and I'm happy to get you the best available...
    view full answer...
  • Can Dexter DX Series EOH Actuator K71-651 Be Used With Hydraulic Drum Brakes?
    I have another option for you, but no you cannot use the Dexter DX EOH Actuator For Disc Brakes # K71-651 with hydraulic drum brakes. This is due to the pressure differences in the actuators as they were designed for the different styles of brakes. Disc brakes need an actuator with 1600 PSI where drum brakes use an actuator with around 1000 PSI, which makes these actuators not interchangeable with the other style of brakes. Since you have hydraulic drum brakes you will need to go with...
    view full answer...
  • Can the Dexter EOH Actuator # K71-650 Be Converted to be Used on a Disc Brake System
    We do carry a Dexter EOH Brake Actuator that will work with disc brakes, but the Dexter Actuator, # K71-650, is designed to be used with hydraulic drum brakes only. The Dexter # K71-651, has a 1600 psi rating that is suitable for a disc brake system on a trailer.
    view full answer...
  • Brake Controller Recommendation to be Compatible with Dexter Electric Over Hydraulic Actuator
    You will need a brake controller that is designed to work with electric-over-hydraulic brakes like the Prodigy P2 part # 90885. The Primus part # TK90160 that you referenced will not work with electric-over-hydraulic brakes and that is why your setup is not working properly.
    view full answer...
  • Availability of Adapter for Dexter EOH Actuator for 2008 GMC Sierra 3500 Factory Brake Controller
    In order to use the factory brake controller on your 2008 GMC Sierra with the Dexter DX Series Electric Over Hydraulic Brake Actuator for Drum Brakes - 1,000 psi # K71-650 you will need an adapter. The good news is we have one available. The Adapter Module for BrakeRite Electric Over Hydraulic Actuator - OE Ford, GM Brake Controllers # DX35FR is the part you are looking for. This will work just like the HBA-CAM you mentioned, and will allow you to control your Dexter Axle electric-over-hydraulic...
    view full answer...
  • Dexter Hydraulic Brake Actuator part # K71-650 Troubleshooting
    Here is the troubleshooting guide for you to use to determine what in your system is failing you. Could be one of three components being wiring, brake controller or actuator and this will help you identify which one it is. Detach all wires from the Dexter Axle E/H unit leaving only the blue, black, white and yellow wires. It is important that the unit is disconnected from any other wires going to the towing vehicle or breakaway switch and breakaway battery. Failure to do so may result...
    view full answer...
  • Dexter Electric Over Hydraulic Actuator Not Working with Ford Factory Brake Controller
    The Ford factory brake controllers are listed as compatible with the Dexter electric over hydraulic actuator # K71-650. It is possible that something else is going on causing the unit to not work. There are some common things to check: Check to see if the white ground wire runs directly to the tow vehicle ground. IT MUST NOT BE GROUNDED TO THE TRAILER ONLY. IT IS IMPORTANT THAT THIS GROUND WIRE RUNS DIRECTLY TO THE TOW VEHICLE'S BATTERY GROUND. NO EXCEPTIONS. Detach all wires from the...
    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...
    Image 1 for
  • Troubleshooting Dexter Electric Over Hydraulic Trailer Brake Actuator Cycles On and Off
    First thing you will need to do is check that all of the wiring of the actuator and your brake controller are correct. I attached a couple diagrams that should be helpful I spoke with my contact at Dexter and there is a way to troubleshoot your actuator. If you use a 12 volt battery and connect just the white wire from the actuator to the negative post and then connect the black wire to the positive side of the battery, you could possibly hear a click sound but the actuator should not...
    view full answer...
    Image 1 for Image 2 for
  • Wiring the Breakaway Switch to Dexter Electric Over Hydraulic Drum Trailer Brake Actuator
    The orange/black wire does connect to the positive battery terminal on the breakaway battery from kit # 34-285. The blue wire connects to the yellow wire on the actuator, # K71-650. I have included a picture showing how everything gets wired up.
    view full answer...
    Image 1 for
  • Is There a Replacement Circuit Board for the Dexter Electric Over Hydraulic Brake Actuators
    I do have an option for you but we don't offer replacement circuit boards for any of our electric over hydraulic brake actuators and if I'm being honest here, that is no something you can purchase and replace yourself. If you wish to have your existing unit repaired it would need to be sent in to the manufacturer for service. In that case, it would probably be better off to just get a new unit entirely as it would not end up being much more when said and done. I recommend the Dexter DX...
    view full answer...
  • Troubleshooting Electric-Over-Hydraulic Brakes On Horse Trailer
    There could be any number of things causing the intermittent braking you are experiencing. I have attached a helpful article that explains troubleshooting for brake controller installations. If you have the first generation of the Prodigy, it is not compatible with electric-over-hydraulic brakes. The P2, part # 90885, or P3, part # 90195, are both compatible with EOH systems. Since you said you can hear the box(actuator) on the trailer come on when you press the brake pedal, it sounds...
    view full answer...
  • Troubleshooting Dexter Electric Over Hydraulic Brake Actuator Not Applying Pressure to Brakes
    The pump should come on when you hit the brakes with your Dexter EOH system. I hope you have the Dexter # K71-651 for disc brakes versus the # K71-650 you asked from which will not work with disc brakes because it won't provide enough pressure. If you have the correct system and the actuator pump is working, then the issue would be in your hydraulic lines or in your electric brake controller settings. The settings would only have to do with the amount of power for braking pressure, where...
    view full answer...
  • Troubleshooting Dexter Brake Actuator
    I spoke with my contact at Dexter and there is a way to troubleshoot your actuator. If you use a 12 volt battery and connect just the white wire from the actuator to the negative post and then connect the black wire to the positive side of the battery, you could possibly hear a click sound but the actuator should not turn on. If it does turn on and run, the unit is defective and needs to be replaced. This would be done without having the blue wire connected. If you have disc brakes on...
    view full answer...
  • Inconsistent Gooseneck Trailer Braking with P3 Brake Controller and Electric Over Hydraulic Brakes
    There is most likely a bad wiring connection and it could be the ground. With a weak ground that could limit the amount of voltage getting to the system so if you turned up the power on the P3 to compensate then when the connection is strong the braking is too aggressive. There could also be an issue with one of the other wires or with the brake fluid lines themselves, and even a problem with the wheel cylinders or brake shoes. I would start with the electrical components. You want to...
    view full answer...


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