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  1. Brake Actuator
  2. Dexter
  3. Surge Brake Actuator
  4. Disc Brakes
  5. Channel
  6. 20000 lbs GTW
Dexter Brake Actuator w/ Electric Lockout - Disc - Zinc - 5 Position Adjustable Channel - 20K
Dexter

Dexter Brake Actuator w/ Electric Lockout - Disc - Zinc - 5 Position Adjustable Channel - 20K

Part Number: T4864120
$845.57
Brake Actuator
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Bolt-on surge brake actuator with adjustable channel lets you mount a coupler (sold separately) in 1 of 5 positions to fit your application. Electric lockout lets you back up without activating trailer brakes. Roller design reduces resistance. 1-800-940-8924 to order Dexter brake actuator part number T4864120 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Brake Actuator w/ Electric Lockout - Disc - Zinc - 5 Position Adjustable Channel - 20K. Brake Actuator reviews from real customers.
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Dexter Brake Actuator - T4864120

Highlights

  • Back Up Without Brake Drag: Electric lockout stops the brakes from engaging in reverse.
  • Handles Heavy Loads: Rated for 20,000 lbs GTW and 2,000 lbs tongue weight for tough towing.
  • Set It Up Your Way: 5-position adjustable channel fits different coupler styles and heights.
  • Built to Last: Zinc-plated steel resists corrosion and damage in harsh conditions.
  • Smooth, Straight Braking: Roller design reduces resistance for even telescoping motion.
  • Ready for Safety: Breakaway kit engages brakes automatically if the trailer disconnects.
Made in USA

Features to know about

Confident Braking Power: 20,000 lbs Capacity for Disc Systems

This bolt-on surge brake actuator packs serious strength for heavy hauling. With a 20,000-lb gross towing weight and 2,000-lb maximum tongue weight rating, it delivers solid braking performance for disc brake trailers. The hydraulic setup kicks in automatically as the trailer pushes forward during deceleration, applying smooth, consistent pressure through the master cylinder. It’s built to handle the load without fade or drama.

Smooth Backing and Control: Built-In Electric Lockout

No more fighting your trailer brakes when you need to back up. The integrated electric reverse lockout keeps the system from activating when you shift into reverse. Once wired into a 5-pole flat, 6-way round, or 7-pole connector, the solenoid automatically disengages braking so you can back up inclines or maneuver around tight spots without resistance. The built-in shield protects the solenoid from the elements for dependable function every time.

Easy Level Setup: 5-Position Adjustable Channel

Getting your trailer level is simple with the adjustable channel design. It has five mounting positions that let you line up your coupler (sold separately) right where it needs to be. Whether you’re using a standard ball coupler, lunette ring, or clevis attachment, this setup makes it easy to match your hitch height for balanced towing and steady braking performance.

Built to Last: Zinc-Plated Steel with Roller Design

The sturdy steel construction stands up to heavy use without bending or flexing in jackknife situations. Its corrosion-resistant zinc finish helps it hold up against wet or salty environments. Inside, a unique roller design minimizes resistance during telescoping movement, giving you smooth, straight-line operation every time you brake. A breakaway kit is included for extra safety on the road.

Specs

Application

  • Trailers with: Disc brakes

Mounting

  • Style: Straight
  • Trailer tongue width: 3"
  • Installation type: Bolt-on

Weight and Capacity

  • Gross towing weight: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs

Warranty

  • Length: 1-Year warranty

068-404-02 Dexter Axle Model 20 Brake Actuator w/ Electric Lockout and 5-Position Leveler Channel - Disc - Zinc - 20,000 lbs

Replaces Titan 4864120





Video of Dexter Brake Actuator w/ Electric Lockout - Disc - Zinc - 5 Position Adjustable Channel - 20K
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for What to Know About the Dexter Brake Actuator w/ Electric Lockout

Today we're going to take a look at the Titan adjustable channel disc brake actuator with the reverse lockout and a 20,000 pound gross towing weight capacity. Now this hydraulic actuator will activate your trailer brakes when your tow vehicle slows or stops. This actuator installs on the tongue of your trailer, and what happens is when you apply the brakes in your tow vehicle, deceleration occurs and the momentum will push the trailer toward the rear of your vehicle. So with the surge brake system, this actuator is triggered as your trailer moves forward once your tow vehicle starts to slow down. So when this happened, the actuator will contract, which applies force to the master cylinder in the back here, and this in turn will supply the necessary hydraulic pressure to engage your trailer's brakes.This one uses a unique roller designed to help reduce resistance during the telescoping to create straight line movement. You can see right here and right here, there's two rollers here, two rollers down here, and if you notice they have the grease zerk fittings on their ends, which makes it easy for your grease gun to attach and lubricate those rollers.

This is a sturdy, durable steel construction, it will resist bending in jackknife situation. Now this one has the electric for reverse lockout. Right in the back here you can see the wires coming out, it's a solenoid, and that lets you back up without actuating your trailer brakes when you're in reverse. Basically the electric reverse lockout is automatically activated when you shift your tow vehicle into reverse. The solenoid wires right here, these will wire into your trailer connector, which will connect to your tow vehicle so that it can determine when you're in reverse.

So basically when your vehicle goes in reverse, the solenoid ensures that the hydraulic actuator does not activate your trailer brakes. Allows you to back up your vehicle.Now to use this lockout feature, you do have to have a five-way flat, six-way round, or a seven-way trailer connector. You'll notice it has this built in shield over it, and that's to protect that solenoid valve from the elements and from any damage. Upfront here, you have the center adjustable channel. Has five different mounting positions for your coupler.

One, two, three, four, five. Now the coupler is not included. We do sell that separately. A few measurements on this. The channel height bottom to the top is right at 12 inches.

Distance between this mounting holes center to center, it's going to be right at. Let's do it this way, two inches. And the inside width, it's going to be right at three inches. This does have a nice corrosion resistance zinc plated finish on it.You can see that it does include the breakaway kit, the breakaway kit is required. And basically what does is this chain will connect to your tow vehicle, so in the case of your trailer might come detached from your tow vehicle, it'll pull this chain. When it pulls that chain, it activates that lover, which will activate the master cylinder to apply the brakes on your runaway trailer. So there's a safety feature that is required. This is a bolt on installation. You can see right down here where it's bolt. This is where you would bolt it onto your trailer tongue. The application, this is for trailers with disc brakes. Gross towing weight capacity is 20,000 pounds, maximum tongue weight capacity is 2,000 pounds, and it is designed to mount onto a straight three inch wide trailer tongue. But that should do it for the review on this Titan adjustable channel disc brake actuator with the reverse lockout and a 20,000 pound gross towing weight capacity..

Ratings & Reviews

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Manda E
Updated by:
Manda E
Employee Amanda M
Written by:
Amanda M

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