bing tracking image
  1. Brake Actuator
  2. Dexter
  3. Surge Brake Actuator
  4. Drum Brakes
  5. 2-5/16 Inch Ball Coupler
  6. 20000 lbs GTW
Dexter Hydraulic Brake Actuator w/ Drop and Lockout Shield - Drum - Zinc - 2-5/16" Ball - 20K
Dexter

Dexter Hydraulic Brake Actuator w/ Drop and Lockout Shield - Drum - Zinc - 2-5/16" Ball - 20K

Part Number: T4854010
$850.68
Brake Actuator
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
Surge brake actuator bolts onto a 4" wide trailer tongue and includes a heavy-duty drop coupler. Zinc plating resists corrosion. Efficient roller design helps reduce resistance. Built-in cover shields solenoid valve (sold separately). 1-800-940-8924 to order Dexter brake actuator part number T4854010 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Hydraulic Brake Actuator w/ Drop and Lockout Shield - Drum - Zinc - 2-5/16" Ball - 20K. Brake Actuator reviews from real customers.
  • All Info
  • Reviews (1)
  • Q & A (0)
  • Videos (1)
  • Photos

Dexter Brake Actuator - T4854010

Highlights

  • Heavy-Duty Towing Power: Rated for 20,000 lbs GTW and 2,000 lbs tongue weight for large loads.
  • Smooth, Straight Braking: Roller design reduces resistance for steady, reliable brake action.
  • Perfect for Use Around Water: Zinc-plated steel resists rust and corrosion on marine or road trailers.
  • Matches Tow Vehicle Height: Built-in drop in coupler helps align trailer level with the tow vehicle.
  • Safe, Easy Hook-Up: Trigger latch with circle grip allows quick and secure coupling every time.
  • Extra Protection for Lockout Setup: Integrated shield guards solenoid valve (sold separately).
Made in USA

Features to know about

Heavy Loads Made Easy: 20,000-lb Surge Actuator with 2-5/16" Ball

This hydraulic actuator is built to handle serious weight. With a 20,000-lb gross towing weight and a 2,000-lb maximum tongue weight, it gives steady braking power for heavy-duty setups. The surge design automatically applies your trailer’s hydraulic drum brakes when you slow or stop, so there’s no need for extra wiring or brake controllers.

Smooth Braking Every Time: Roller Design for Straight-Line Movement

The actuator uses a unique roller design that cuts down on resistance during telescoping. That means the inner slide moves cleanly in line with the trailer, helping deliver consistent, smooth braking without jerky feedback. It’s a simple mechanical setup that just works when you need it to.

Built to Last: Zinc-Plated Steel Construction

The zinc-plated finish fights off rust and corrosion, making this actuator a solid match for trailers that see water, road grime, or long-term outdoor use. The sturdy steel body holds up under stress and resists bending if things get tight during sharp turns or jackknife situations.

Easy to Use: Drop Coupler with Trigger Latch and Circle Grip

The built-in drop coupler helps align your trailer height with your tow setup. Hooking up is quick with the trigger latch and circle grip—just pull back to open the ball socket and you’re ready to couple or uncouple safely. It fits a 2-5/16" ball and bolts right onto a straight 4" wide tongue for a clean install.

Protected Design: Built-In Shield and Breakaway Kit Included

A built-in shield covers the area where an electric lockout solenoid valve can be added (sold separately), keeping it protected from dirt and debris. The included breakaway kit adds another layer of safety by activating the brakes if the trailer ever separates from the tow vehicle.

Specs

Application

  • Application: trailers with hydraulic drum brakes

Weight and Capacity

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

Compatibility

  • Ball size: 2-5/16"

Mounting

  • Mounting: straight, 4" wide trailer tongue

Warranty

  • Warranty: 1-Year warranty

Note

Because this actuator does not include a reverse lockout, it is recommended that you equip your trailer with free-backing brakes so that you can drive in reverse without the actuator triggering your trailer's brakes.

068-256-01 Dexter Axle Model 20 Brake Actuator w/ Lockout Shield - 2-5/16" Ball Coupler - Drum - 20,000 lbs

Replaces Titan 4854010





Video of Dexter Hydraulic Brake Actuator w/ Drop and Lockout Shield - Drum - Zinc - 2-5/16" Ball - 20K
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Comprehensive Review: Dexter Hydraulic Brake Actuator w/ Drop and Lockout Shield

Hello, everybody this is [email protected]. Today. We're going to take a look at this Titan hydraulic drum brake actuator with the drop for two and five 16 diameter hitch balls, and 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, the deceleration occurs and the momentum will push your trailer toward the rear of your vehicle. So with the surge brake system, the actuators triggered as your trailer moves forward.

Once your tow vehicle starts to slow down. So when this happens, this inner slide portion of the actuator will contract and applies force to the master cylinder back here, and then this in turn supplies, the necessary hydraulic pressure to engage your trailer's brakes.Now this actuator has a nice corrosion resistant zinc plated finish on it, and it is a unique roller design. You can see the drovers here and then a couple of write-ups here. This is how produced to resistance during the telescoping to help create a nice straight line movement. Also, if you notice on all the rollers, they do use grease cert fittings on the ends, exit easy for lubrication.

You just attach your grease in there and you can pump grease in there to lubricate the rollers. This is a sturdy, durable steel construction, and resist bending in any jackknife situations. And we mentioned it has the Trop. You can see how this drops down. This built-in drop will help you match your tow vehicle height.

The trigger latch right here allows for nice, safe, easy coupling, and uncoupling has a nice circle grip here that you makes the latch simple to use. You just open it up and now it's open. You can drop it onto your ball once it's on the ball and you can just pull it back up and just release it and it'll lock into place and lock onto your ball.Now on this one, it does include at the back here, you can see this built in shield. This is for protection of an electrical reverse lockout solenoid application. Now this one does not come with the electrical reverse lockout, but it does have the shield that if you do add one and a note on this is because this model does not include that reverse lockout.

It is recommended that you equip it with either the electrical reverse lockout solenoid, or you can even do free backing brakes on the trailer so that you can drive in reverse without triggering your trailer's brakes.Now, this does include this breakaway chain here. This chain right here, you can see the connection to this lever. This is required by law prevents a trailer runaway situation. Basically you hook this to your tow vehicle, and then what happens if by chance, this comes detached from your tow vehicle. It'll pull on this chain, which will pull this lever and that lever will activate the master cylinder to apply brakes and prevent a runaway situation.Now, this is a bolt on installation. You can see right down here at the bottom mounts to a straight four inch wide trailer tongue inside measurement is four inches on this and the specs on this. Again, this is for trailers with hydraulic drum brakes, the gross towing weight capacity on this is 20,000 pounds. Maximum tongue weight capacity is 2000 pounds and it is designed to fit a standard hitch ball size of two and five 16 inch diameter. But that should do it for the review on the Titan hydraulic drum brake actuator with the drop for a two and five 16 diameter hitch ball and has a 20,000 pound gross towing weight capacity.

Ratings & Reviews

5.0

1 reviews
Review sort icon
Surge brake actuator bolts onto a 4" wide trailer tongue and includes a heavy-duty drop coupler. Zinc plating resists corrosion. Efficient roller design helps reduce resistance. Built-in cover shields solenoid valve (sold separately).

by:


1
1

See what our Experts say about this Dexter Brake Actuator

  • Switching My Electric Drum Brakes to Hydraulic Drum Brakes on Dexter 10k Axles
    We carry disc brake kits for the Dexter 10K Standard Duty axle. Unfortunately, there is no disc brake kit available through our venders that fits the Dexter 10K Heavy Duty Axle. You could upgrade to a hydraulic drum brake system from your electric drum brakes. You will need Dexter Left Hand Hydraulic Brake Assembly # 23-404 and the Right Hand Brake Assembly # 23-405. If your drums need to be replaced, you will need Brake Drum Assembly # 9-27-1. You can remove your hubs off your current...
    view full answer...

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

At etrailer 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.