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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 - Primed - 5 Position Adjustable Channel - 20K
Dexter

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

Part Number: T4856820
$719.63
Brake Actuator
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Weld-on surge brake actuator with adjustable drop 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 T4856820 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 - Primed - 5 Position Adjustable Channel - 20K. Brake Actuator reviews from real customers.
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Dexter Brake Actuator - T4856820

Highlights

  • Back Up Without Brake Drag: Electric lockout keeps brakes off when reversing.
  • Strong for Heavy Loads: Rated 20,000 lbs GTW and 2,000 lbs tongue weight for large trailers.
  • Level Towing on Tall Trailers: 5-position adjustable drop channel aligns coupler height.
  • Smooth, Straight Operation: Roller design reduces resistance during telescoping.
  • Built to Last: Sturdy steel body with primed outer case and painted inner slide resists bending.
  • Emergency Safety: Included breakaway kit applies brakes if trailer disconnects.
Made in USA

Features to know about

Smooth Backing and Tight Maneuvers: Built-In Electric Lockout

Backing down a steep ramp or into a tight spot is simple with the built-in electric lockout. When your tow vehicle is in reverse, the solenoid stops brake pressure from building, so the trailer rolls freely without dragging the brakes. It wires directly into a 5-pole flat, 6-way round, or 7-pole trailer connector and works automatically, which makes reversing a lot smoother and easier.

Strong and Steady Under Load: 20,000 lbs GTW Weld-On Construction

With a 20,000-lb gross towing weight and 2,000-lb maximum tongue weight, this actuator is built for heavy use. The steel housing is sturdy enough to resist bending in jackknife situations, and the weld-on design gives you a solid, permanent mount on a straight 3" wide trailer tongue. The primed outer casing is ready for paint, while the painted inner slide stays protected from corrosion once it’s sealed up.

Flexible Setup for Different Builds: 5-Position Adjustable Channel

The adjustable drop channel gives you five different coupler positions to match your trailer’s setup. Whether you’re using a standard ball coupler, lunette ring, or clevis attachment, you can dial in the height you need for a level tow. The built-in drop helps line up taller trailers so everything sits straight and balanced behind your rig.

Reliable Braking for Disc Systems: Smooth Roller Design

The hydraulic actuator handles disc brakes and uses a roller mechanism that cuts down resistance as it telescopes. That makes the motion smooth and direct when you slow down, giving consistent brake pressure every time. The built-in shield protects the solenoid valve from road spray and debris, keeping the braking system working reliably trip after trip.

Extra Safety for Every Tow: Integrated Breakaway Kit

A breakaway kit is built in for added protection. If the trailer ever separates from the tow vehicle, the breakaway system applies the brakes automatically to bring everything to a stop. It’s one less thing to worry about when hauling heavy loads or navigating steep grades.

Specs

Application

  • Application: trailers with disc brakes

Weight and Capacity

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

Mounting

  • Mounting: straight, 3" wide trailer tongue

Warranty

  • Warranty: 1-Year warranty

068-386-00 Dexter Axle Model 20 Brake Actuator w/ Electric Lockout and 5-Position Leveler Channel - Disc - Weld On - 20,000 lbs

Replaces Titan 4856820





Video of Dexter Brake Actuator w/ Electric Lockout - Disc - Primed - 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 Comprehensive Review: 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 it has a 20,000 pound gross towing weight capacity. Now this hydraulic actuator will activate your trailer brakes when your tow vehicle slows or stops.Basically 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 a surge brake system, the actuators triggered and as your trailer moves forward, once your tow vehicle starts to slow down, the actuator will contract and apply force to the master cylinder that's in here and then this in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.This one is a unique roller design. You can see the two rollers here, the two down here. These will help reduce resistance during the telescoping to create a nice straight line movement.And if you notice on the ends of those rollers they have grease zerk fittings that make it very easy for lubrication of the moving parts.This is a sturdy, durable steel construction. It will resist bending in any jackknife situations.

And on the very back here, if I spin this around, you can see they have an electric reverse lockout solenoid and this will allow you to back up without actuating your trailer brakes. Basically this electric reverse lockout is automatically activated when you shift your tow vehicle into reverse and the solenoid wires on the end here, this'll wire into your trailer connector which will connect to your tow vehicle so that it could detect when you're in reverse. And when it's in reverse, the solenoid ensures that the hydraulic actuator does not activate your trailer brakes, which allows you to back up your vehicle.Now to use this lockout feature, you do have to have either a five-way flat, six way round, or a seven way trailer connector on your vehicle.If you notice they also install this built in shield to protect that solenoid valve from the elements and from any damage. If you go to the front here, we have an offset adjustable channel here. You can see it has five different mounting positions.For your coupler, now the coupler that goes in here, which is not included, that is sold separately.

And if you notice on this channel it does have a builtin drop, which is great for tall trailers and that's because of the adjustable channels position so that the mounted coupler can sit below the actuator tube, allowing for a greater drop than with a standard center mounted channel. So as a result you can line up a tall trailer with your tow vehicle's hitch for a nice level setup.Few dimensions I want to give you on this channel. The height of it from the bottom to the very top, it's going to be right at 12 inches. The inside width that your cupper 00:02:31 will fit into, inside to inside, is going to be right at three inches. And the distance between the mounting holes, in other words, center to center between each mounting hole next to each other, it's going to be right at two inches.They do use a prime finish on the outer casing and a painted inner slide.

Does include the breakaway kit. That's this chain here and this is required. And what this will do, this chain hook right here, will hook to your tow vehicle. And what this will do is when you have a runaway situation, in case your trailer would become disconnected from your tow vehicle, what it will happen is it'll pull on this chain, which would then activate the switch, which would activate your master cylinder and it'll apply the pressure to your brakes to prevent a runaway situation. That is all included.How to install this.

It is a weld on installation. Application, this is designed for trailers with disc brakes. Again, the gross towing weight capacity is 20,000 pounds. Maximum tongue weight is 2000 pounds. And this is designed to mount on 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.

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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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