bing tracking image
  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Drum Brakes
  5. Channel Only
  6. 8000 lbs GTW
Demco Hydraulic Brake Actuator - Drum - Zinc - 8" Adjustable Channel Up - 8,000 lbs

Demco Hydraulic Brake Actuator - Drum - Zinc - 8" Adjustable Channel Up - 8,000 lbs

Item # DM8759241
Our Price: $212.59
Brake Actuator
This item qualifies for Free Shipping
Shipping Weight: 34 lbs
Quantity: 
In Stock
Brake Actuator DM8759241 - 8000 lbs GTW - Demco
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

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

Videos

Need help with installation?
Locate installers near me
Surge actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. Adjustable up channel lets you mount coupler attachments (sold separately) in 1 of 3 positions. 2-Hole bolt-on case. 1-800-496-5010 to order Demco brake actuator part number DM8759241 or order online at etrailer.com. Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Hydraulic Brake Actuator - Drum - Zinc - 8" Adjustable Channel Up - 8,000 lbs. Brake Actuator reviews from real customers.
  • All Info
  • Reviews (1)
  • Q & A (0)
  • Videos (1)
  • Photos
  • Why etrailer?

Demco Brake Actuator - DM8759241

  • Surge Brake Actuator
  • Drum Brakes
  • Channel Only
  • 8000 lbs GTW
  • Bolt-On
  • No Lockout
  • Straight Tongue Coupler
  • Demco

Surge actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. Adjustable up channel lets you mount coupler attachments (sold separately) in 1 of 3 positions. 2-Hole bolt-on case.


Features:

  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • Adjustable channel has 3 different mounting positions for coupler (sold separately)
    • Channel-up design allows for greater drop
  • Zinc plating offers excellent 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
  • Acetal copolymer lining provides smooth operation as actuator telescopes in and out
  • Breakaway included
  • Heavy-duty steel construction
  • Bolt-on installation
    • 2-Hole case has 2 mounting holes on each side of actuator
    • 1/2" x 4-1/2" Grade 5 bolts (not included) required for mounting
  • Made in the USA


Specs:

  • Application: trailers with hydraulic drum brakes
  • Gross towing weight: 8,000 lbs
  • Maximum tongue weight: 800 lbs
  • Channel width: approximately 3"
  • Channel height: 8"
  • Mounting: straight, 3" wide trailer tongue
  • Model number: DA91
  • 1-Year warranty


Note: This actuator is compatible with the Demco manual reverse lockout kit (DM5939). If you choose not to add the 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.


Adjustable Channel Design

The adjustable channel on this trailer brake actuator allows for ultimate versatility. Mount almost any type of coupler (sold separately) - from a standard ball coupler to a lunette ring or clevis attachment - to fit your specific application. In addition, the 3 mounting positions on the channel let you adjust the height of the coupler. Just place the coupler so that it matches the height of the ball mount or other hitch attachment on your tow vehicle and you will be able to tow your trailer levelly.


This actuator is great for low-riding trailers. This is because the adjustable channel is positioned so that the mounted coupler can sit above the actuator tube, allowing for a greater rise than with a standard center-mounted channel. As a result, you can line up your low trailer with your tow vehicle's hitch for a level setup. Alternatively, if you have a standard trailer paired with a lifted tow vehicle, then this channel-up design will help you achieve a level towing setup for this type of application as well.


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.



8759241 Demco DA91 Hydraulic Trailer Brake Actuator for Drum Brakes - Channel Up - 8,000 lbs





Video of Demco Hydraulic Brake Actuator - Drum - Zinc - 8" Adjustable Channel Up - 8,000 lbs

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




Video Transcript for Demco Brake Actuator - Surge Brake Actuator - DM8759241 Review

Speaker 1: Today we're going to take a look at the Demco Hydraulic Trailer Brake Actuator for drum brakes. This is the adjustable channel-up design, and has an 8,000 pound weight capacity.Now this hydraulic actuator will activate your trailer brakes when your tow vehicle slows or stops. It does use the adjustable channel here, which has three different mounting positions for your coupler. Now the coupler that goes in here is sold separately, and this is a channel-up design, so it does allow for a greater drop.This all has a nice zinc plating on it to offer excellent corrosion resistance. It does meet a 200 hour salt spray rating. On the very back here, it uses the composite master cylinder, which is very durable and efficient.

It's a glass-reinforced nylon construction to resist rust and corrosion. It has a nice, large reservoir to provide increased capacity for your brake fluid. And if you notice at the top here, uses an automotive-style diaphragm cap which creates a completely enclosed system to help prevent contamination of the brake fluid.On the inside of this actuator, they use an acetol copolymer lining. It provides a nice, smooth operation as the actuator telescopes in and out. If you notice, it has the break-away cable here, which is all included.

It has a snap hook on the end of the cable and ensures secure connection for your break-away lever.This is a heavy-duty construction. It's a bolt-on installation. If you look at the bottom here, it's a two-hole case. It has two mounting holes on each side of the actuator. It does require a half-inch by four and a half-inch long grade five bolts for mounting it, and those are not included.This part is made in the USA.

A few specs on this again, the application, this is for trailers with hydraulic drum brakes. Gross towing weight capacity is 8,000 pounds. Maximum tongue weight is 800 pounds. The channel width, the inside to inside is right at three inches. Channel height, we mentioned, is right at eight inches.

Mounting for this, it's designed to mount on a straight three inch wide trailer tongue. And this actuator also goes by the model number of DA91.But that should do it for the review on the Demco Hydraulic Trailer Brake Actuator for drum brakes, with the adjustable channel-up design and an 8,000 pound weight capacity.


Customer Reviews

Demco Hydraulic Brake Actuator - Drum - Zinc - 8" Adjustable Channel Up - 8,000 lbs - DM8759241

Average Customer Rating:  5.0 out of 5 stars   (1 Customer Reviews)

Surge actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. Adjustable up channel lets you mount coupler attachments (sold separately) in 1 of 3 positions. 2-Hole bolt-on case.

by:

Exactly as advertised, seems heavy duty, master cylinder was easy to bleed, installed and functional within an hour, hardest part was removing previous old discontinued hits system.



1
1

See what our Experts say about this Demco Brake Actuator

  • Can You Add a Lockout to the Demco Hydraulic Brake Actuator DM8759241
    The Demco Hydraulic Brake Actuator part # DM8759241 does not come with a lockout but you can add a manual one with the Manual Reverse Lockout Kit for Demco Hydraulic Trailer Brake Actuators part # DM5939. If you are looking for an electric lockout you can use the Titan Brake Actuator w/ Electric Lockout part # T4857220 which has a 12,500 lb weight capacity but is not offered in an 8,000 lb model.
    view full answer...



  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate brake actuator information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Laura H
Updated by:
Laura H

At etrailer.com 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.


Product Experts Available Now!
Call 1-800-496-5010