Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball

Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball

Item # T4750620

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Brake Actuator

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T4750620 - Electric Lockout Titan Surge Brake Actuator
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  • Surge Brake Actuator
  • Disc Brakes
  • 2-5/16 Inch Ball Coupler
  • 12500 lbs GTW
  • Titan
  • Bolt-On
  • Electric Lockout
  • Straight Tongue Coupler
Corrosion-resistant, 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. Call 800-298-8924 to order Titan brake actuator part number T4750620 or order online at etrailer.com. Free expert support on all Titan products. Guaranteed Lowest Price and Fastest Shipping for Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball. Brake Actuator reviews from real customers.

  • All Info
  • Reviews (8)
  • Q & A (20)
  • Videos (1)
  • Photos
  • Why etrailer?

Titan Brake Actuator - T4750620

Corrosion-resistant, 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.


  • Hydraulic actuator synchronizes trailer brakes with tow-vehicle brakes
  • Electric reverse lockout lets you back up without actuating trailer brakes
    • Built-in shield protects solenoid valve from the elements
  • Unique roller design reduces resistance during telescoping to create straight-line movement
  • Sturdy, durable steel construction resists bending in jackknife situations
  • Standard, heavy-duty coupler with built-in drop
  • Breakaway kit included
  • Zinc plating is corrosion resistant
  • Bolt-on installation


  • Application: disc brakes
  • Ball size: 2-5/16"
  • Drop: 3"
  • Mounting: 3" wide channel tongue
  • Capacity: 12,500 lbs
  • Maximum tongue weight: 1,250 lbs
  • 1-Year warranty

When you apply the brakes in your tow vehicle, deceleration occurs and momentum pushes your trailer toward the rear of your vehicle. With surge brake systems, the actuator is triggered as your trailer moves forward while the tow vehicle slows. The actuator telescopes, applying force to its master cylinder, which in turn supplies the necessary hydraulic pressure to engage the trailer's brakes.

Electric reverse lockout with solenoid is automatically activated when the tow vehicle is shifted into reverse. To use this feature, you must have a 5-pole flat, 6-way round or 7-pole wiring harness.

4750620 Titan Model 10 Actuator with 2-5/16" Ball, Drop Coupler - Disc Brakes - Solenoid Lockout and Cover - Zinc

Replaces Titan T4750610

Video of Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball

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

Video Transcript for Titan Brake Actuator - Surge Brake Actuator - T4750620 Review

Today we're going to take a look at the Titan Zinc-Plated Brake Actuator with the drop for Disc Brakes, has the electric lockout, and it fits on a hitch ball size of 2-5/16" diameter. Now this hydraulic actuator will synchronize your trailer brakes with your tow vehicle brakes. On the very back here it has this electric reverse lockout which is attached to the back of the master cylinder. This will let you back up without actuating the trailer brakes. The lockout is basically a solenoid that is attached from the back of the master cylinder. It has two wires coming out of it that connect to the ground and into the reverse light circuit, so when you put your vehicle in reverse, it'll cut off the brakes from applying on your brakes when you're in reverse. Then if you also notice right here it has nice built in shield to protect that solenoid valve from the elements or from any damage. They also used this unique roller design that will reduce resistance during telescoping to create straight line movement.

When this moves in it goes on the rollers. It is a sturdy durable steel construction which will resist bending and jackknife situation. The coupler right here at the front is a standard heavy duty coupler, has a built-in 3" drop you can see right here that will help level the trailer to the tow vehicle. The breakaway kit which is this lever and the chain right here. Let me just show you. This breakaway kit is all included. Basically what this would do is you'll take the hook on this end, and attach it to your tow vehicle, and once that's all hooked, if by chance your trailer ever disconnects from your tow vehicle, it will pull this chain which will activate this lever which will apply the brakes in your trailer and keep it from a runaway situation. This is all zinc plated which is corrosion resistant.

If you notice right here all the holes, that's a bolt-on installation. The application for this is it's a disc brake application. Again the ball size the coupler fits on is a 2-5/16" diameter. The drop right here on the coupler is 3'. The mounting right down here, this is designed to put on a 3" wide channel tongue.

Weight capacity on this is 12,500 pounds, and the maximum tongue weight capacity is 1,250 pounds. That should do it for the review on the Titan Zinc-Plated Brake Actuator with the drop for Disc Brakes, has the electric lockout and fits on a 2-5/16" hitch ball. .

Customer Reviews

Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball - T4750620

Average Customer Rating:  3.8 out of 5 stars   (8 Customer Reviews)

Corrosion-resistant, 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.

- T4750620

Great service, Easy to look up parts and the free shipping is awesome although a bit slow 657959

- T4750620

I'm sure the product works fine, but it was too long for my available trailer mounting space. If etrailer would provide measurements along with their product information, it would have saved me the return fees and hassle. Also, packaging is terrible. It was thrown in a box with no packing, and arrived all dented up. Now I have to return it, hopefully without discussion on whose fault that is. Box arrived full of holes, and unit dinged and dented on the corners. 583624

- T4750620

Customer service was great! I received my parts in two days with free shipping. 559018

- T4750620

When I got the box,,, it looked like it went around the world a few times. The metal cover around the back up lock out is bent up, but still workable. 471209


Ill have one of our customer service folks get in touch with you shortly regarding the damage your coupler sustained.

-- Mike L - 01/30/2018


- T4750620

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 468578

- T4750620

Haven't towed with it yet. Loosely bolted to trailer frame. fit perfect. tin on back around solenoid was bent coming out of package but not huge deal. Won't know more until it gets some road use but so far so good. 426051

- T4750620

Thanks for the very quick and personal service. My items arrived very quickly and in good shape. Especially like the photos and summary of what was purchased as part of the confirmation/order. I definitely recommend etrailer.com 408737

- T4750620

Product was sent very well fast delivery and it was exactly what I wanted 371300


Ask the Experts about this Titan Brake Actuator
Do you have a question about this Brake Actuator?

  • Replacement Titan Surge Brake Actuator for Model 10 Part 3241639
  • The replacement Titan actuator for your Model 10 with part number 3241639 is listed on our site as the Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout # T4750620. My contact at Titan confirmed this.
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  • Timbren Axle-Less Suspension System Compatibility with Aluminum I-Beam Trailer Frame
  • The Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Off-Road Tires - 3,500 lbs # ASR35HDS02 is compatible with I-beam frames and in tandem axle configuration. Due to the Aluminum frame, I recommend putting a thin rubber pad between the steel mount and the aluminum I-beam. The powder coat on the steel should keep the two dissimilar metals from galvanic corrosion, but a thin rubber pad would drastically increase this safety. Zinc plated hardware will work well with...
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  • Replacement Actuator For Disc Brakes On Triple Axle Boat Trailer
  • The Titan Replacement Master Cylinder Assembly for Titan Model 10 and Model 20 Brake Actuators - Disc, # T4749501042 will work with disc brakes if you are looking to rebuild your actuating coupler. The Dico Master Cylinder 23744 is only compatible with drum brakes. If you are looking to replace it you will want the Titan Zinc-Plated Brake Actuator w/ Drop, Lockout Shield - Disc - 2-5/16" Ball - 12,500 lbs # T4750620 also made for disc brake application. You do want to ensure you...
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  • Disc Brake Kit for a Grand Design Travel Trailer with 5,000 Pound Lippert Axles
  • You likely have 5,200 pound de-rated axles. You can check the bearing numbers stamped into the sides of the bearings in one of the hubs on the trailer now to help determine what will fit. Most likely they use inner bearing 25580 and outer bearing 15123. For a disc brake kit that uses these bearings I recommend # K2HR526DKG. This is a kit for one axle so if you need brakes on both axles you would need 2 kits. For bearings you would need 4 of inner bearing # 25580, 4 of outer bearing...
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  • Electric Lockout Solenoid Wiring
  • The two wires coming out of the Titan Zinc-Plated Brake Actuator w/ Drop, Electric Lockout - Disc - 2-5/16" Ball # T4750620 are for the lockout solenoid as you stated. One wire will be used for the power coming from your reverse light signal and the other will ground to your trailer frame. Some of the models now come with a single wire for power on that solenoid and have a set screw underneath to attach your own ground wire to the frame.
    view full answer...

  • Replacement Orifice Fitting and Cap for a Titan Model 10 Actuator
  • Sounds like you need the orifice fitting gasket part # T0774500 and the replacement cap part # T4830601 for your Titan Model 10 actuator.
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  • Replacement Surge Brake Parts for 2004 5 Starr Boat Trailer
  • It sounds like you have a Demco Actuator to me like # DM8104002. We also have one with a 4 inch drop # DM8104311. Both are Hydraulic Brake Actuators that are rated at 12,500lbs.,has a 2-5/16 inch ball, and bear the DA10 model number. I was able to look up your boat trailer and the parts used between packages varied. I can help you pick out Rotors, Lines, Calipers, and Pads if you can provide me with more information about the current items on the trailer. I will need the number of...
    view full answer...

  • Repair Kit for Titan Zinc-Plated Disc Brake Actuator for 2-5/16-Inch Balls Model T4750620
  • Yes, the Titan Coupler and Trailer Brake Actuator Repair Kit # T1848700 will fit your 2-5/16-inch actuator model # T4750620 and all other Titan couplers and actuators that specifically fit a 2-5/16-inch hitch ball.
    view full answer...

  • Installing and Bleeding New Hydraulic Brakes Lines on Trailer With Titan Actuator
  • I can help you install new hydraulic brake lines on the trailer. The Titan Zinc-Plated Actuator part # T4750620 is a surge brake actuator so you need hydraulic brake lines. The kit you need depends on how long the trailer is that you are installing the lines in and how many axles the trailer has. The Kodiak Hydraulic Brake Line Kit part # 24TA-BLKIT is for a 24 foot tandem axle trailer. To install the lines you want to drill a hole near where the Titan Coupler installs so that you can...
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  • Parts Needed for Electric to Disc Brake Conversion on 2019 Grand Design Reflection Travel Trailer
  • We have disc brake conversion kits for your 2019 Grand Design's 5200-lb axles that are shown on the linked page. A complete hub-and-rotor kit like # K2HR526D completely replaces your existing hubs with new 6-on-5-1/2 hub/rotors and includes the calipers and pads. To select the right kit you'll need to match the wheel bolt pattern, wheel size and the hub bearing set to your existing setup. Disc kits for any given axle weight rating come in various finishes. An all stainless-steel kit...
    view full answer...

  • Replacing Master Cylinder in Titan Model 10 Actuator on Boat Trailer
  • If the master cylinder you need is the part # T2374600 that would indicate that you have a Model 10 actuator like the part # T4750620. Which normally this bolts to the trailer frame. The picture you submitted doesn't quite show the coupler so I can't really tell what's going on. But you should be able to unbolt the coupler from the trailer to access the master cylinder and replace it. The two lower bolt holes that I pointed out in the picture are what hold the master cylinder to the coupler.
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  • Are Surge Brake Actuators Compatible with Weight Distributions Systems
  • There are many weight distribution system available that are surge brake compatible, I actually attached a link to a page that will take all the systems that are compatible. The best way to pick out a weight distribution system is to base it off of the loaded tongue weight of the setup. This also needs to include the weight of any cargo behind the rear axle of the tow vehicle. Check out the link I attached that details how to determine tongue weight. Once you know your tongue weight...
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  • Parts to Replace Hydraulic Brake System on a 2004 Magic Tilt Trailer
  • We can definitely get you started with parts for your Magic Tilt Trailer, but we will need some additional information to complete your parts list. We can start with a coupler. Since your boat trailer will not exceed 10,260 lbs, I recommend looking at a coupler like the Titan Zinc-Plated Brake Actuator for Disc Brakes, # T4750620. This coupler has a 3 inch drop like the coupler you referenced, but it has a 12,500 lb weight capacity which is closer to the weight of your trailer. Using...
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  • Replacement Disc Brake Actuator for a Road King Boat Trailer
  • I have the exact replacement brake actuator for your Road King boat trailer. For this, you are going to want to use the Titan Zinc-Plated Brake Actuator part # T4750620. This is the same actuator as you have on your trailer now and will allow for a direct bolt-on installation. The actuator has a corrosion resistant zinc plating and comes with the reverse lockout solenoid built into the unit. I have attached a review video of the actuator for you as well.
    view full answer...

  • Recommended Install Hardware Recommendation for the Titan Actuator part # T4750620
  • Install bolts are not included with the Titan Actuator part # T4750620 that you referenced, you will need to get them from a local hardware store. Titan recommends you use 1/2 inch by 4 inch grade 5 or better bolts, nuts, and lock washers.
    view full answer...

  • Will Brake Mounting Flanges be Installed on New Axle
  • Whether the axles have the brake mount flanges on them will depend on what you purchased. However, since they're 6,000 pound axles it's fairly likely the flanges will be there. If not, we carry # 4-44-1 for 6,000 pound axles. It will need to be welded to the axle at a trailer shop because it needs to be perfectly square and concentric. As long as your current brake actuator is for disc brakes and functioning properly there's no need to replace it. However, if you previously had drum...
    view full answer...

  • Electric Winch and Surge Actuator Recommendation for Trailer Towing 9,500 lb Boat
  • When it comes to choosing a winch for a boat trailer, there are a few general rules we can use. The boat-size-to-winch capacity is generally 2 to 1. With good rollers and short winching distances, the ratio can increase to 3 to 1 and with wooden bunks and long winching distances, you will want to reduce the capacity to 1 to 1. For an electric winch that would work well for you the ComeUp winch part # CU644501 would work well. This has a 4,500 lb capacity and a 50 foot long synthetic...
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  • Replacement Master Cylinder Assembly for Titan Actuator Coupler for Disc Brakes
  • The Titan Actuator you referenced, part # T4750620, is their model 10 actuator which uses replacement master cylinder # T2374600. Their model 60 actuator uses replacement master cylinder assembly # T4820000.
    view full answer...

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Info for this part was:

Photos by:
Theodore B
Written by:
Lindsey S
Expert Research:
Michael H
Installed by:
Jeff D
Updated by:
Adele M
Expert Research:
Adam R
Updated by:
Sarah W
Photos by:
Jeffrey L
Updated by:
Hannah L

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