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  1. Brake Actuator
  2. Dexter
  3. Surge Brake Actuator
  4. Disc Brakes
  5. 2-5/16 Inch Ball Coupler
  6. 20000 lbs GTW
Dexter Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs
Dexter

Dexter Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs

Part Number: T4750720
In Stock
$879.59
Brake Actuator
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Surge-type actuator bolts over 3" wide trailer tongue and includes standard, heavy-duty coupler with 3" drop. Electric reverse lockout lets you back up without activating the trailer brakes. Features corrosion-resistant plating. 1-800-940-8924 to order Dexter brake actuator part number T4750720 or order online at etrailer.com. Free expert support on all Dexter products. Great prices and Fastest Shipping for Dexter Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - 20,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (61)
  • Q & A (0)
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Dexter Brake Actuator - T4750720

Highlights

  • Back Up Without Brake Drag: Electric lockout stops brakes from engaging in reverse.
  • Ready for Heavy Loads: Handles up to 20,000 lbs GTW and 2,000 lbs tongue weight.
  • Ideal for Boat or Utility Trailers: Zinc-plated finish resists rust and corrosion.
  • Smooth, Straight Braking: Unique roller design keeps telescoping motion aligned.
  • Simple Bolt-On Setup: Mounts on a 3" wide channel tongue with standard pattern.
  • Built-In Drop Coupler: 3" drop fits 2-5/16" ball for secure, heavy-duty towing.

Features to know about

Backing Up Made Easy: Electric Reverse Lockout

Backing up a loaded trailer can be tricky, especially on slopes or tight corners. The built-in electric reverse lockout on this actuator keeps the brakes from engaging when you shift into reverse, so the trailer rolls freely without drag. It’s automatically activated through a 5-pole flat, 6-way round, or 7-pole wiring harness, which makes reversing smooth and stress-free every time.

Confident Braking: Hydraulic Disc Setup Rated for 20,000 lbs

This surge-type actuator is built for serious braking power. It’s rated for 20,000 lbs with a maximum tongue weight of 2,000 lbs and works with disc brakes to deliver solid, consistent stopping force. The roller design inside the telescoping mechanism cuts resistance so the movement stays straight and true under load. Whether you’re hauling heavy gear or long trailers, you get steady braking that matches your tow vehicle’s deceleration.

Built to Last: Zinc-Plated Steel Construction with 3" Drop Coupler

Heavy-duty steel construction gives this unit the toughness to handle rough use and resist bending in tight jackknife situations. The zinc plating shields it from rust and corrosion, which is great for long-term use around water or road salt. The standard coupler includes a built-in 3" drop that helps level your setup while keeping everything strong and secure.

Simple Mounting: Bolt-On Fit for 3" Channel Tongues

Installing this actuator is straightforward. It bolts right over a 3" wide channel tongue using standard grade-5 hardware. There’s no need for welding or complicated fabrication—just line up the mounting pattern and bolt it on solid. That means less downtime in the shop and more time towing with confidence.

Extra Safety Built In: Integrated Breakaway System

If the trailer ever separates from the hitch, the built-in breakaway kit automatically applies the brakes to bring it to a stop. It’s a simple but critical layer of safety that helps protect your trailer and everything behind it during an emergency disconnect.

Specs

Application

  • Application: disc brakes

Compatibility

  • Ball size: 2-5/16"
  • Mounting: 3" wide channel tongue

Dimensions

  • Drop: 3"

Weight and Capacity

  • Capacity: 20,000 lbs
  • Maximum tongue weight: 2,000 lbs

Warranty

  • Warranty: 1-Year warranty

068-507-20 Dexter Axle Model 20 Actuator with 2-5/16" Ball, Drop Coupler - Disc Brakes - Solenoid Lockout and Cover - Zinc

Replaces Titan 4750720





Ratings & Reviews

4.2

61 reviews
Review sort icon
Surge-type actuator bolts over 3" wide trailer tongue and includes standard, heavy-duty coupler with 3" drop. Electric reverse lockout lets you back up without activating the trailer brakes. Features corrosion-resistant plating.

by:

I purchased this to because i was replace the drum brakes with disk brakes. It is an excellent actuator (as are the brakes and brake lines). The one issue I have is the thin metal shield for the backup solenoid, it has sharp edges that can cut the insulation of a wire (like the one going to the solenoid) or a child's finger. This design is clearly an afterthought by someone who is incompetent. I bent part of the shield back on itself to minimize the chance of any damage to the wire. This could be easily remedied if the manufacture would add a 1/2" and roll the metal back on itself before bending it. I guess I should be happy that the shield is there at all. I would give it 5/5 if it was not for this stupid afterthought design



by:

Was not packaged properly and broke through the box. Bent, we were able to correct it



by:

As aways the order is correct and on ti me!!!!!!!



by:

The item came damaged. The back cover plate for the electronic lockout was bent and twisted.



by:

Bought this as a replacement for a Titan Model 107 (who Dexter bought a while back) and it is a perfect fit.



by:

I got the product in but had some minor damage but Amy handled it very well and made sure It was taken care of. I am very happy with the customer svc.
Still need to install the product.



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Product appears to be in good shape even though the box was severely damaged. I have not installed it yet.



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Works Great.



by:

Delivered fast and as promised. Some damage in shipping. a broken grease fitting and the lockout solenoid was cracked but still works.

Jenny N. profile picture

Jenny N.

11/22/2022

Hey I appreciate the feedback. I will have customer service reach out to you so that we can have the zerk fitting and solenoid taken care of for you.



by:

Very happy with both the service and pr oducts.



by:

Product arrived quickly and as expected. Product description is right on. Fit on trailer, works and looks great.



by:

Great product. Very well designed



by:

Speed O Light Shipping!



by:

Product was what I expected. etrailer.com delivered as expected.



by:

I ordered the parts I needed on Monday they said it would be delivered on Thursday it was at my address on Tuesday afternoon. No shipping charge and very good service.



by:

Have not installed it yet but the service from etrailer is great.
They have everything you need and the expertise to get you what you need the 1st time.



by:

Actuator arrived very quickly after order via UPS. Part was as described and the online instructions and manual for installation were extremely helpful. Thanks etrailer. I will use etrailer for all my trailering needs!



by:

The mounting tab was slightly bent in shipping so the installation was a little tough by myself. Just had to bend it back and needed four hands. The product overall is a direct replacement of the unit I am replacing so I am expecting it to function flawlessly.



by:

Perfect fit and easy installation.



by:

This is exactly what wa advertised and arrived quicker than I thought, especially since it is during the holidays when shipping always takes longer.

The only reason it doesn't get 5 stars is the packaging, the actuator really needs to be packed in something more ridgid that cardboard. My actuator arrived with the 2 pins on the cylinder bracket bent (looks like it may have been dropped during shipping). I didn't contact the seller as the last one that I ordered (from another vendor) arrived the same way and for me it is easyer to repair it that return it.


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See what our Experts say about this Dexter Brake Actuator

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    I do have an option for you but the release handle on the Titan Zinc-Plated Brake Actuator part # T4750720 is going to limit the use of some coupler locks like the MegaHitch Lock Coupler Vault Pro part # UF35-946510. Instead, I recommend the Blaylock EZ Lock Trailer Coupler Lock part # BLTL-33-40D. In order to break though this lock you would have to cut though a 3/4" thick hardened steel pin which is easier said than done. This would require power tools but if a would-be thief does have...
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  • Replacement Inner Slide and Hitch Ball Coupler for Titan Brake Acuator T4750720
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  • Shipping Weights of T4750720 & 20TA-BLKIT
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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeff D
Installed by:
Jeff D
Employee Adele M
Updated by:
Adele M
Employee Wilson B
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Wilson B
Employee Michael B
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