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  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Drum Brakes
  5. 2-5/16 Inch Ball Coupler
  6. 8000 lbs GTW
Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2-5/16" Ball - 8,000 lbs
Demco

Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2-5/16" Ball - 8,000 lbs

Part Number: DM8759411
In Stock
$355.29
Retail:$426.32
You Save: $71.03
Brake Actuator
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Surge-type actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. eZ-Latch coupler mechanism makes hookup a snap. Bolt-on application. 1-800-940-8924 to order Demco brake actuator part number DM8759411 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2-5/16" Ball - 8,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (48)
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Demco Brake Actuator - DM8759411

  • Surge Brake Actuator
  • Drum Brakes
  • 2-5/16 Inch Ball Coupler
  • 8000 lbs GTW
  • Bolt-On
  • Farm Trailer
  • Boat Trailer
  • Construction Trailer
  • Travel Trailer
  • Utility Trailer
  • No Lockout
  • Demco
  • 3 Inch Channel Tongue

Surge-type actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. eZ-Latch coupler mechanism makes hookup a snap. Bolt-on application.


Features:

  • Activates your trailer's drum brakes when tow vehicle slows or stops - no brake controller needed
  • eZ-Latch coupler mechanism for simple, secure hookup and disconnect
    • Lets you hook up when latch is in closed position - just drop coupler over hitch ball and latch will snap into place
  • Zinc plating offers corrosion resistance
    • 200-Hour salt spray rating
  • Composite master cylinder is durable and efficient
    • Glass-reinforced nylon construction resists rust and corrosion
    • Large reservoir provides increased capacity for brake fluid
    • Automotive-style diaphragm cap creates completely enclosed system to help prevent contamination of fluid
  • Acetyl copolymer lining provides smooth operation as actuator telescopes in and out
  • Built-in drop helps you match tow vehicle height
  • Breakaway included
    • Includes breakaway cable with snap hook
  • Constructed of heavy-duty steel
  • Bolts onto your trailer tongue
    • Hardware not included
  • Made in the USA


Specs:

  • Application: trailers with hydraulic drum brakes
  • Designed to bolt on top of a 3" wide trailer tongue
    • 1/2" x 4-1/2" Grade-5 bolts (not included)
    • See below for bolt pattern dimensions
  • Ball size: 2-5/16"
  • Gross towing weight: 8,000 lbs
  • Maximum tongue weight: 800 lbs
  • Drop: 4"
  • Model number: DA91
  • 1-Year warranty


3 hole standard bolt pattern for Demco surge brake actuator

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.


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 hydraulic actuator is triggered as your trailer moves forward, once your tow vehicle starts to slow down. When this happens, the actuator contracts, applying force to its master cylinder. This in turn supplies the necessary hydraulic pressure to engage your trailer's brakes.


eZ-Latch Coupler

The coupler portion of this trailer brake actuator features a simple-to-use latching mechanism known as the eZ-Latch. With this mechanism, hooking up is as easy as dropping the coupler over your trailer hitch ball. The latch does not need to be tugged or manually activated to allow the ball into the coupler socket, nor does it have to be secured in place. Just make sure that the coupler is properly lined up with the ball when you lower it, and the rest is automatic.


Demco eZ-Latch in Use

Sturdy, Corrosion-Resistant Construction

Made of sturdy steel, this hydraulic trailer brake actuator features a durable zinc coating that is designed to limit rust and corrosion. This zinc coat has a 200-hour salt spray rating. In addition, the composite master cylinder is made of corrosion-resistant glass-reinforced nylon to further ensure durability.



8759411 Demco DA91 Hydraulic Trailer Brake Actuator for Drum Brakes - 2-5/16" Ball Easy-Latch Drop Coupler - 8,000 lbs




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Customer Satisfaction Score:

Ratings & Reviews

4.8

48 reviews
Surge-type actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. eZ-Latch coupler mechanism makes hookup a snap. Bolt-on application.

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Easy install, no issues



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Great. Item came early notices were very fast. Everyone was very friendly and helpful. Thank you very much.



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Excellent service as always Thanks Steve



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Retrofitted with the old hitch great, match up



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Friendly on the phone. Shipped when said they would. Was delivered as promised.



by:

Very happy with the product however shipping care could be improved. Although packing paper was placed in shipping box, it was not wrapped around item thus leading to a slightly damaged emergency brake cable. A lot of weight bouncing around unprotected.



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Quality as always



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Bolt on replacement for the old hitch. Fit and works perfectly



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Perfect for my 30foot triple axle trail er.



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The actuator works great and I have now sold the trailer and the new owner is very happy with the unt



by:

Product as describe, customer service went above and beyond. They definitely provided beyond 5 star rating. I appreciate everyone’s help at etrailer to make this shipment possible!!!


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Show More Reviews

See what our Experts say about this Demco Brake Actuator

  • Replacement Brake Actuator for Global Direct GDC-80 Brake Actuator
    We have the perfect replacement for your Global Direct GDC-80 brake actuator. Since you mentioned "down tongue" I believe you were referring to having an actuator with drop. If you have disc brakes, the best option is the Demco Hydraulic Brake Actuator w/ Drop - Disc # DM8758811 and if you have drum brakes the best option is the Demco Hydraulic Brake Actuator w/ Drop - Drum # DM8759411. Both of these actuators have a 4" drop, are compatible with a 2-5/16" hitch ball, have an 8,000 lb capacity...
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  • Recommended Hydraulic Brake Actuator for Drum Brakes
    Cal, no the Demco Hydraulic Brake Actuator # DM8758811 is only going to work with disc brakes. For drum brakes you're going to need the Demco Hydraulic Brake Actuator w/ Drop # DM8759411.
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  • Can I Use Demco DM78CV 2" Brake Actuator With 2-5/16" Ball?
    Not with this unit, Clint. The DA86 Demco Drum Brake Actuator # DM78CV is designed strictly for a 2” ball. If you need to use a 2-5/16”, you’ll want to look at the DA91 or a heavier-duty actuator that’s built for that coupler size. You could look into the Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2-5/16" Ball - 8,000 lbs # DM8759411 and see if it'll work for you. It seems to match what you are needing. Let me know if you need any more help selecting the correct one for your...
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  • Replacement for Titan Model 6 Trailer Brake Actuator
    That is a great photo, thank you; and while there are certain repair parts available for a Titan Model 6, I recommend replacing it altogether. The reason for this is the corrosion looks to have taken its toll on the actuator, and is at the point where a replacement makes the most sense in terms of safety and value. The Titan Model 60 is still a good option, and the right one will depend on if you have disc or drum brakes: - Disc Brakes: Titan Zinc-Plated Brake Actuator - Disc - 2-5/16"...
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  • Surge Brake Actuator Recommendation to Replace TITAN / DICO Model 60Z
    Yes, the Demco Hydraulic Brake Actuator # DM8759411 that you referenced will work on a tandem axle trailer with drum brakes like what you have. The latch system of this would also work well too since it automatically latches to the ball.
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  • Replacement Surge Brake Actuator Recommendation for Donzi Boat Trailer
    It's not an exact match but the surge brake actuator we offer that would match what you have the best is the Demco part # DM8759411. This is for drum brakes, has a drop for the coupler portion like your current coupler, and has more than enough capacity at 8k. Also it fits a 2-5/16 inch ball like what you have. The mounting holes won't line up though as they won't center on the frame channel like your current actuator. You can still have this welded on though in place of what you have...
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  • Bolt Hole Dimensions for Demco Hydraulic Brake Actuator # DM8759411
    I attached a picture that has the bolt hole dimensions of the Demco Hydraulic Brake Actuator # DM8759411 for you to check out but the distance between the two closer holes is 3 inches and the distance between the two holes further apart is 9-1/2 inches.
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  • Does Demco Surge Coupler Have to Sit Flush to Tongue When Bolted In
    Hey Rick, so as long as you have all three of the mounting holes of the Demco Surge Actuator part # DM8759411 in use when you install it the gap between the bottom of the coupler and your trailer tongue is totally fine.
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  • Can a 12,500 Pound Brake Actuating Trailer Coupler be Used in Place of a 7,500 Pound Coupler
    If you go with a higher capacity brake actuator than what the trailer requires the braking can be very aggressive. If the trailer is supposed to have a 7,500 pound capacity actuator then that is what I recommend sticking with that or going up to an 8,000 pound model such as # DM8759411.
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  • Replacement 8K Actuator Coupler for Alumaweld Rogue Single Axle Drum Brake Trailer
    The linked page displays the 8K-rated drum brake surge actuators, both bolt-on and weld-on types. You can click on the coupler ball size you need, 2-inch or 2-5/16-inch, to see options. For example, Demco bolt-on coupler # DM8759411 takes a 2-5/16 inch ball and fits trailer tongues that are 3-inches wide. I checked the Alumaweld website and also called them to find out the width of the tongue on your trailer but they were not able to confirm. I also called one of their dealers in Orgeon,...
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  • Complete 25 Foot Brake Line Kit With Actuator And Electric Brakes For 3,500lb Boat Trailer
    Hey Ken, Sorry for the delay. I see you already bought the Hydrastar Hydraulic Brake Line Kit - Single Axle - 25' Long, 3/16" Main Line # HS496-251. That is a good option since it's always nice to get a few extra feet just in case you need it. Just to make sure, you have a single axle boat trailer right? That's what this kit is for. Then I also see you got the Demco Hydraulic Trailer Brakes - Free Backing - Galvanized - Left/Right - 10" - 3.5K # 40716-15 and Demco Hydraulic Brake Actuator...
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  • What Surge Brake Actuator do I Need to Replace My Atwood with 2 5/16" Ball Drum Brakes 8k?
    Hello Jared, If would depend on what kind of Atwood Surge Brake actuator. Can you please send me a model number, or any numbers off of the actuator so I can cross reference it to find the best replacement? If you are not sure, feel free to send me a picture of the actuator by responding directly to the email that you receive. Please make sure to let me know if you have drum brakes or disc brakes as that also makes a difference on what you need. I look forward to hearing back from you...
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  • Can the Demco DM8758811 Replace Hydraulic Brake Actuator for 2 Inch Ball With 6,600 Pound GTW
    Yes, you can replace your current brake actuator with the Demco Hydraulic Brake Actuator w/ Drop - Disc - Zinc - 2-5/16" Ball - 8,000 lbs # DM8758811. When selecting a brake actuator you must select one that meets or exceeds the GTWR of the trailer. Assuming you have a 3" wide trailer tongue and the 4" drop works for you, this will work well as a replacement. Keep in mind, this is designed for disc brakes. If you have hydraulic drum brakes you will want the # DM8759411 instead. I have...
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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Written by:
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Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
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Updated by:
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Employee Dustin K
Video Edited:
Dustin K

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