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  1. Brake Actuator
  2. Dexter
  3. Surge Brake Actuator
  4. Disc Brakes
  5. Lunette Ring
  6. 20000 lbs GTW
Dexter Brake Actuator - Disc - Primed - 3" Lunette Ring - 5 Position Adjustable Channel - 20K
Dexter

Dexter Brake Actuator - Disc - Primed - 3" Lunette Ring - 5 Position Adjustable Channel - 20K

Part Number: T4848500
$726.69
Brake Actuator
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Weld-on, drop-channel, surge brake actuator has a lunette ring that can be mounted in 1 of 5 positions to match your application. Features primed finish and an efficient roller design that reduces resistance. For use with disc brakes. 1-800-940-8924 to order Dexter brake actuator part number T4848500 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Brake Actuator - Disc - Primed - 3" Lunette Ring - 5 Position Adjustable Channel - 20K. Brake Actuator reviews from real customers.
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Dexter Brake Actuator - T4848500

Highlights

  • Handles Heavy Loads: Rated for 20,000 lbs GTW and 2,000 lbs tongue weight for tough towing jobs.
  • Smooth Braking: Surge design activates disc brakes automatically as your vehicle slows.
  • Fits Tall Trailers: Built-in drop and 5-position adjustable channel help level high-riding trailers.
  • Strong Connection: 3" lunette ring couples securely to a pintle hitch for rugged duty use.
  • Long-Lasting Build: Durable steel body with primed exterior resists bending and wear.
  • Simple Weld-On Mount: Attaches directly to a 3" trailer tongue for a solid, permanent install.
Made in USA

Features to know about

Strong Braking for Heavy Loads: 20,000 lbs GTW Surge Actuator

This hydraulic surge actuator delivers the stopping power needed for trailers with disc brakes and heavy loads up to 20,000 lbs GTW and 2,000 lbs tongue weight. When the tow vehicle slows down, the actuator’s internal roller design moves in a straight line with low resistance to apply consistent braking pressure. The sturdy steel body resists bending in jackknife situations, keeping braking smooth and controlled even under tough conditions.

Built for Tall Trailers: Drop Channel with 5 Mounting Positions

The offset adjustable channel gives you plenty of flexibility when lining up your trailer. It has 5 mounting positions and a built-in drop that’s ideal for tall trailers, letting you set your lunette ring or coupler at the right height for a level tow. The 3" lunette ring couples easily with a pintle hitch and stays steady on rough terrain.

Weld-On Durability: Primed Outer Casing and Painted Inner Slide

This actuator is built for long-term use with a weld-on design that forms a solid connection to your straight, 3" wide trailer tongue. The outer casing comes primed so it’s ready for paint or finishing, while the inner slide is painted for extra corrosion protection. It’s a rugged setup designed to handle heavy-duty work without loosening or flexing.

Added Safety on the Road: Built-In Breakaway Kit

A built-in breakaway kit adds another layer of protection by activating the brakes if the trailer ever separates from the tow vehicle. It’s wired and ready to use, so you get peace of mind every time you hitch up.

Simple Mechanical Operation: No Lockout Design

Since this actuator does not include a reverse lockout, it’s best paired with free-backing brakes that let you reverse without engaging the system. That keeps things simple—no extra solenoids or wiring—just straightforward mechanical braking when you need it most.

Specs

Application

  • Application: trailers with disc brakes

Weight and Capacity

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

Dimensions

  • Lunette ring diameter: 3"
  • Mounting: straight, 3" wide trailer tongue

Warranty

  • Warranty: 1-Year warranty

Note

  • Recommendation: 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.

068-339-00 Dexter Axle Model 20 Brake Actuator with 3" Lunette Ring and 5-Postion Leveler Channel - Disc - Weld On - 20,000 lbs

Replaces Titan 4848500





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See what our Experts say about this Dexter Brake Actuator

  • Is the Titan Brake Actuator 4848500 Bolt-On or Weld-On
    The Titan Brake Actuator part # T4848500 is a weld-on adjustable trailer coupler. The photo we have on the product page is a "typical photo" which means although it is similar to the one you will receive, it is not the same. The photo does show a bolt-on application but the actual item you will receive is a weld on.
    view full answer...

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
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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