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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: T4856520
In Stock
$807.25
Brake Actuator
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Bolt-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 T4856520 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 - T4856520

Highlights

  • Back Up Without Brake Drag: Electric lockout lets you reverse without brakes engaging.
  • Strong Towing Power: Handles up to 20,000 lbs GTW and 2,000 lbs tongue weight for heavy loads.
  • Built for Harsh Conditions: Zinc-plated steel resists rust and corrosion on boat or utility trailers.
  • Fits Tall or Custom Trailers: 5-position adjustable drop channel helps level high trailer setups.
  • Smoother Braking: Roller design reduces resistance for even, straight-line actuator movement.
  • Ready for Safety: Integrated breakaway kit applies brakes if the trailer disconnects.
Made in USA

Features to know about

Smooth Braking for Heavy Loads: Hydraulic Surge System Rated for 20,000 lbs GTW

This actuator is built for serious towing. The hydraulic surge design activates the trailer’s disc brakes automatically when your tow vehicle slows or stops, creating smooth and reliable braking. With a 20,000-lb gross towing weight and 2,000-lb maximum tongue weight rating, it has the strength to handle heavy or multi-axle trailers without strain. The sturdy steel construction resists bending in tight turns and jackknife situations, so you get consistent performance even under pressure.

No More Brake Lock-Up When Backing Up: Electric Reverse Lockout

Backing into your driveway or down a ramp is easier with the built-in electric lockout. The solenoid connects through your trailer wiring—5-pole flat, 6-way round, or 7-pole—and automatically stops brake activation when your vehicle is in reverse. That means you can back up smoothly without the brakes grabbing or dragging. The solenoid also has a protective shield to keep it safe from the elements.

Level Towing Made Simple: 5-Position Adjustable Channel with Drop

The offset adjustable channel gives you five mounting positions so you can line up your coupler exactly where it needs to be. Whether you’re using a standard ball coupler, lunette ring, or clevis attachment (sold separately), the built-in drop helps level taller trailers with ease. Once set up, your trailer tows level and tracks straight behind the vehicle.

Built to Last in Harsh Conditions: Zinc-Plated Finish and Roller Design

The zinc-plated finish fights off rust and corrosion, making it a smart pick for boat and utility trailers exposed to water or salt. Inside the actuator, the unique roller design reduces resistance during telescoping for smooth, straight-line movement every time you brake. It also includes a built-in breakaway kit for extra safety if the trailer ever becomes uncoupled. Bolt-on installation on a straight 3" wide trailer tongue keeps the setup simple and secure.

Specs

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 period: 1-Year warranty

068-383-01 Dexter Axle Model 20 Brake Actuator w/ Electric Lockout and 5-Position Leveler Channel - Disc - Zinc - 20,000 lbs

Replaces Titan 4856520 and 586720





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 Let’s Check Out the Dexter Brake Actuator w/ Electric Lockout

Today we're going to take a look at the Titian disc brake actuator with electric lock out. It has the 5 position adjustable channel, zinc finish, and a 20,000 weight capacity. Now this hydraulic actuator will activate your trailer's brakes when your tow vehicle slows or stops. On the very back there, and I'll swing this around, you'll see there's a solenoid attached to the master inaudible 00:00:20 on the back. This is an electric reverse lock out which will let you back up without actuating your trailer brakes. Basically this reverse lock out will automatically activate when you shift your tow vehicle into reverse.

The way it does that, you'll notice it has 2 black wires coming out of it. One wire will attach to your reverse light circuit, the other to a good, clean ground. When you put your vehicle in reverse, the solenoid will ensure that the actuator does not activate your trailer brakes. Thus allowing you to back your trailer up. Now to use this lock out feature you do have to have a 5 pull flat 6 way round R7 pull trailer connector. If you notice the shield over it, it has a built in shield to help protect the valve from any elements, and from any damage.

If you look on the front here, it has a nice offset adjustable channel. It has 5 different mounting positions for your coupler. If you notice, this one has a nice built in drop, which is great for tall trailers. In this channel you could mount almost any type of coupler, from a standard ball coupler to a lunette ring, to a clevis attachment to fit whatever application you need. I'll give you a few measurements on the channel. The width of it inside is 3 inches.

The height of the channel from the very bottom to the very top is going to be right at 12 inches. Now there are 6 holes in it. The distance from one hole center to the other is 2 inches. Now this actually does use a unique roller design to reduce your distance during your telescoping of the actuator to create a straight line movement. If you'll notice right here where the rollers are, there's 2 grease serve fittings. Basically you can put your grease in on there and pump grease in there to help lubricate the rollers.

It is a sturdy, durable steel construction. Helps resist bending in any jackknife situation. The whole actuator has a nice zinc plating to it to provide corrosion resistance. If you notice it does come with a breakaway kit. I unhook it here, you can see here's your chain. That's hooked to your breakaway lever, so this hook on the end will connect to your tow vehicle, and by chance if your trailer ever breaks away or disconnects from your tow vehicle, the chain will pull that lever to actuate the brakes and keep the trailer from a runaway situation. This is a bolt on installation. If you can see right on the bottom here there's a mounting channel. It is designed to fit on a straight 3 inch wind trailer tongue. inaudible 00:02:42 bolted on. A few specs on this again, the application is for trailers with disc brakes. Gross towing weight capacity is 20,000 pounds. Maximum tow weight is 2,000 pounds, and the vertical range of adjustment on this coupler right here is 10 inches. That should do it, for the review on the Titan disc brake actuator with an electric lock out, 5 position adjustable channel, with the zinc finish, and a 20,000 weight capacity.

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Used Items Available
Image of T4856520
Image of T4856520
Image of T4856520

Condition: Badly Dinged

Notes: The solenoid shield is very bent. Otherwise, new and unused.

$661.28
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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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