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

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

Item # DM8669112
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Our Price: $321.44
Brake Actuator
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Shipping Weight: 43 lbs
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Demco 2 Inch Ball Coupler Brake Actuator - DM8669112
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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 DM8669112 or order online at Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2" Ball - 8,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (7)
  • Q & A (0)
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  • Why etrailer?

Demco Brake Actuator - DM8669112

  • Surge Brake Actuator
  • Drum Brakes
  • 2 Inch Ball Coupler
  • 8000 lbs GTW
  • Bolt-On
  • No Lockout
  • Straight Tongue Coupler
  • Demco

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.


  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • 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
  • 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
    • Snap hook on safety cable ensures secure connection to breakaway lever
  • Heavy-duty steel construction
  • Zinc plating offers corrosion resistance
    • 200-Hour salt spray rating
  • Bolt-on installation
    • Requires 1/2" x 4-1/2" Grade 5 bolts (not included) for mounting
  • Made in the USA


  • Application: trailers with hydraulic drum brakes
  • Ball size: 2"
  • Gross towing weight: 8,000 lbs
  • Maximum tongue weight: 800 lbs
  • Mounting: straight, 3" wide trailer tongue
  • Drop: 4"
  • 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.

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.

8669112 Demco DA91 Hydraulic Trailer Brake Actuator for Drum Brakes - 2" Ball Easy-Latch Drop Coupler - 8,000 lbs

Customer Reviews

Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2" Ball - 8,000 lbs - DM8669112

Average Customer Rating:  5.0 out of 5 stars   (7 Customer 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.


Hitch arrived early and looks just like the picture and description. It is an exact replacement for the original. All the parts are available to rebuild the unit as well but mine was rusted pretty badly so I would have had a lot of time refinishing everything I didn't replace. In my situation there was about a $50 difference between rebuilding old or complete new unit. If your hitch is in better shape than mine, they have an excellent selection of repair parts. I would suggest taking yours apart and as long as it's not rusted solid, they can probably supply you with parts for less than $70.


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


Had a hard time trying to find this product, but E trailer was able to provide me with great service and found the trailer hitch I needed for my trailer.


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





See what our Experts say about this Demco Brake Actuator

  • How to Bleed Brakes with Demco Hydraulic Brake Actuator
    I have attached an image from the operation manual for the Demco Hydraulic Brake Actuator # DM8669112 that details how to bleed the brakes. The process consists of first elevating the trailer tongue about 4 to 6 inches and then loosening or removing the two 5/16" bolts that hold the lever guide and emergency lever spring and removing the master cylinder fill cap. You will want to use short strokes to pull the emergency lever forward, pumping the master cylinder until the brake fluid in...
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  • Bolt Hole Dimensions Of Demco Brake Actuator # DM8669112
    The mounting holes of the Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2" Ball - 8,000 lbs # DM8669112 are in the same exact locations as you mentioned. From front bolt to second bolt center to center is 3 inches. From the front bolt to the rear bolt center on center is 12-1/2 inches. This bolt-on installation requires 1/2 inch by 4-1/2 inch Grade 5 bolts that are not included. I've attached a photo to help.
    view full answer...
    Image 1 for
  • Replacement Surge Brake Coupler for Boat Trailer
    The coupler you are seeking is a surge brake coupler. You may not have the same look as your previous coupler as styles can change, but you need to make sure you have the correct capacity rating for your trailer and the correct coupler as drum brakes and disc brakes have different psi ratings. You will also need to determine if you need a manual lockout, electric (reverse light circuit) lockout, or no lockout. Because you already have stated it is a 2 inch ball, I've linked the pages...
    view full answer...
  • Recommended Drop Coupler Replacement for UFP A-75 Surge Brake Actuator
    It sounds like you need a drop coupler on the trailer like the Demco Hydraulic Brake Actuator part # DM8669112. The built-in drop will help with coupling on smaller vehicles. It is designed for drum brakes, has a 2" coupler, and 8,000 lb weight capacity.
    view full answer...
  • Is There a Manual Lockout for Demco DA91 Actuator part # DM8669112
    The Demco Actuator part # DM8669112 that you referenced is compatible with the manual lock out part # DM5939 that you referenced so that would be exactly what you'd need.
    view full answer...
  • Replacement for a TDE LP8500 Boat Trailer Acuator
    We don't offer an 8500 lb rated surge coupler, but we might have options that would work for you. If the GVWR (weight of trailer plug boat) is 8000 lbs or less, I'd recommend the Demco item # DM8669113 if your trailer has disc brakes or item # DM8669112 for a drum brake aactuator.
    view full answer...
  • Adding Manual Lockout to Surge Brake Actuator
    The reason there are different actuators for disc brakes and drum brakes is the psi the brakes operate at. Disc brakes operate at a higher psi than drum brakes and either too much or too little pressure can cause damage to the brakes. There are units that can have manual reverse lockouts installed but not all.
    view full answer...
  • Replacement Surge Brake Actuator Assembly for Boat Trailer 3" Straight Bolt Pattern
    The Demco Hydraulic Brake Actuator # DM8669112 will fit the 3" frame on your boat trailer. I have attached a picture that will show the different bolt patterns as this on will sit above the frame and not quite on the frame. The 3 hole straight that you have will have bolt holes that are 0.85" below the top of the frame while the 3 hole standard holes on the # DM8669112 are 1.5" below the top of the frame rail. I recommend the Demco Hydraulic Brake Actuator w/ Manual Lockout # DM8760011....
    view full answer...
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  • Recommendation to Replace Atwood 83010 Brake Actuator
    Your existing Atwood model 83010 Brake Actuator (which as you mentioned is no longer available) is an 8,000 pound rated assembly for hydraulic drum brakes that's compatible with a 2" ball. It's designed to fit 3" wide straight trailer tongues. In terms of specs the closest option we have available for replacement is the Demco Hydraulic Brake Actuator # DM8669112. This actuator features an 8,000 pound towing capacity, works with 2 inch hitch balls, fits 3" wide trailer tongues, and is...
    view full answer...
  • How to Determine the Correct Replacement Brake Assembly Size for a 6,000-lb Axle
    You can determine what the correct replacement brake assembly is by measuring the diameter of the brake assembly. This is measured from one brake pad directly across to the other brake pad. This is demonstrated at the 2:05 mark of the attached review video for our Electric Trailer Brake Kit # AKEBRK-7-SA that should be what you are needing for your application. This kit measures 12" x 2" and is compatible with 5.2K to 7K axles. This kit also comes with both the right and left hand assemblies. If...
    view full answer...
  • Recommended Replacement Coupler for Atwood 83000 Surge Brake Actuator Coupler
    The Atwood 83000 was a 8,000 lb drum brake actuator for a 2 inch hitch ball that has been discontinued. For a replacement I recommend the Demco Hydraulic Brake Actuator w/ Drop - Drum - Zinc - 2" Ball - 8,000 lbs # DM8669112. The only other option for that 8,000 lb capacity is a channel mount like the Demco Hydraulic Brake Actuator - Drum - Zinc - 8" Adjustable Channel Down - 8,000 lbs # DM8759131 which will allow you to use a coupler like the Demco Trailer Coupler - Adjustable Channel...
    view full answer...
  • Replacement Brake Actuating Coupler for Upgrade to Disc Brakes
    The bolt hole dimensions of the Demco Brake Actuator # DM8669112 are 12-1/2 inches on center and 3 inches on center. I've attached a photo to assist. The Titan # T4747220 has mounting holes that are 3 inch on center so 2 of the 3 holes will align with your current coupler. Instead of changing out your entire coupler, you may want to simply change out your master cylinder on your Demco Actuator using the Replacement Master Cylinder for Demco Actuators - Disc Brakes # 5672. This will...
    view full answer...
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  • Solution for lowering a pontoon trailer's coupler that sits too high for Jeep Grand Cherokee
    The only replacement for your Dexter DX7.5L A-60 Brake Actuator # DX33FR that has drop would be the Demco Hydraulic Brake Actuator w/ Drop 2" Ball - 8,000 lbs # DM8669112. This offers 4" of drop and is still compatible with a 2" ball and drum brakes, just as your current Dexter actuator is. It looks like your 2019 Jeep Grand Cherokee receiver should sit about 19" from the ground, so 4" of drop may allow the trailer to sit level (measure to verify). If 4" is not enough drop or if you plan...
    view full answer...

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Info for this part was:

Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Laura H
Updated by:
Laura H

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