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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

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

Part Number: DM8669112
In Stock
$313.17
Retail:$426.12
You Save: $112.95
Brake Actuator
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Bolt it on your boat trailer and get it back into action! The plating on this actuator is 2 times stronger than standard zinc, and EZ-Latch is a step above the usual trigger latch, making hitching up practically automatic. Proudly made in the USA. 1-800-940-8924 to order Demco brake actuator part number DM8669112 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" Ball - 8,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (46)
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Demco Brake Actuator - DM8669112

  • Surge Brake Actuator
  • Drum Brakes
  • 2 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

Bolt it on your boat trailer and get it back into action! The plating on this actuator is 2 times stronger than standard zinc, and EZ-Latch is a step above the usual trigger latch, making hitching up practically automatic. Proudly made in the USA.


Features:

  • Activates your trailer's drum brakes when tow vehicle slows or stops - no brake controller needed
  • Makes hitching up fast, safe, and super-easy
    • EZ-Latch coupler lets you hook up when latch is in closed position
    • Latch will snap into place when you lower the coupler onto your hitch ball
    • Built-in drop helps you match tow vehicle height
  • Provides you with years of smooth, durable, and efficient operation
    • Automotive-style diaphragm cap prevents fluid contamination
    • Large reservoir allows for increased brake fluid capacity
    • Glass-reinforced, nylon, composite master cylinder
    • Inner member glides on a heavy-duty, self-lubricating plastic liner
  • Constructed of heavy-duty steel
  • Includes breakaway cable with snap hook
  • Holds up against corrosion 2 times longer than a standard zinc plating - 200-hour salt spray rating
  • 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"
  • 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

If your trailer isn't married to just one tow vehicle, this Demco actuator will be a great option for you. Just keep in mind that because it doesn't have a reverse lockout on it to keep your brakes from locking up, either you will need to add a manual one (DM5939 - sold separately) or have free-backing brakes instead.


Never Second Guess Your Connection Again with the Demco EZ-Latch

Few things matter in towing as much as a secure connection to your hitch ball. The thing of it is, some coupler latches don't really have a way to show you that they have a firm grasp on the hitch ball. You either just have to eyeball it or try to wiggle the coupler latch until it closes. And if you opt for just trusting your coupler and assuming it's on there, you might not notice the gap between the ball and your coupler's ball socket, an issue known as highballing, until it's too late and you lose your trailer on the highway.


Demco eZ-Latch in Use

That won't be an issue with the EZ-Latch on this Demco actuator. Just center your coupler over the hitch ball, and lower your trailer tongue as you normally would.


Demco Coupler Cutaway

As the coupler's socket slowly accepts the hitch ball, you'll see the latch rise. Keep lowering your trailer tongue until you hear the metalic clink . When you do, you'll know for certain that you've got a good, strong connection, without the need to tug or wiggle the latch into place. This gets you on the road a little bit quicker and with a lot more confidence.


The EZ-latch is so easy to use that you don't even need a safety pin to keep the ball secured inside the socket. But you can, as a theft deterrent, put a locking pin through the dedicated hole on the side of the coupler.


Hard Plastic Lining for a Smooth Towing Experience

You might see the phrase "hard plastic" and think, how durable could that really be? But the truth is, it's tougher than it looks and you'll probably never break it.


Hard plastic lining of the Demco DA10 surge brake actuator

Its real name is acetal copolymer. It has a self-lubricating surface. It's extremely resilient, durable, and smooth. And it wears well over time. In fact, this same can even be found in some automotive applications, making it perfectly suited for a telescoping brake actuator on a boat trailer.


How Does a Surge Brake Actuator Work?

When you slow to a stop as you're towing, momentum pushes your trailer toward the rear of your vehicle. When this happens, the surge brake actuator compresses the master cylinder inside, which forces it to push hydraulic fluid out to your brake lines, ultimately engaging your trailer brakes. When you start moving again, the actuator will telescope back out, stopping the flow of fluid back to the brakes and allowing your trailer's wheels to start rolling again.



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




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Ratings & Reviews

4.8

46 reviews
Bolt it on your boat trailer and get it back into action! The plating on this actuator is 2 times stronger than standard zinc, and EZ-Latch is a step above the usual trigger latch, making hitching up practically automatic. Proudly made in the USA.

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Ordering was simple, delivered very quickly. Great job, guys.



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Solid construction and good design



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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.



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Nice coupler, however packaging is very insufficient and has been dropped where brake line threads, threads were damaged in the master cylinder and the brass adapter to the hose is bent. The packaging only has a couple pieces of shipping paper in it, not near enough to prevent shipping damage



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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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Excellent product and it’s working great !!!!



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Awesome service



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Perfect for my 30foot triple axle trail er.



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Bolted in place of the old one with minor drilling. Easy to bleed the system and works great.



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



by:

I live on a farm where it seems we're always fixing trailers or building trailers for use. I have bought several hitches from etrailer and they have ALWAYS been helpful. Great selection to choose from also. Recommend them highly.


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See what our Experts say about this Demco Brake Actuator

  • 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...
  • Can Electric Lockout be Added to Demco Hydraulic Brake Actuator w/ Drop For Drum Brakes
    Hi there Rich; while it doesn't come with one, there is a way to add an electric lockout to the Demco Hydraulic Brake Actuator w/ Drop - Drum # DM8669112. All you need to do is add the Reverse Lockout Solenoid for Demco Hydraulic Brake Actuators - Non-Bypass # DM11993.
    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...
  • 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 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...
    view full answer...
    Image 1 for
  • 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...
    Image 1 for Image 2 for
  • 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 Demco DA91 Surge Brake Actuator For a Atwood 83000 Drum Brake Actuator
    The drop on the Demco Hydraulic Brake Actuator # DM8669112 is only moving he coupler lower so you will not need as large of a rise on the tow vehicle. We do have the Demco Hydraulic Brake Actuator # DM8609101 without a drop that has all the same features. They both are rated for a tongue weight up to 800lbs, trailer weight up to 8,000lbs, have a 2" coupler, zinc coated, rated for drum brakes and have the same bolt pattern.
    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...
    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...
  • Replacement for Atwood 83000 Surge Brake Actuator
    The Atwood 83000 is a weld-on coupler that fits a 3" straight trailer tongue and is rated for 8,000 lbs. If you truly need the 8,000 lb capacity then I recommend the Demco Hydraulic Brake Actuator w/ Drop # DM8669112. However, this does have a 4" drop. If a 7,000 lb gross towing weight works for your application then the Demco Hydraulic Brake Actuator # DM72VR would be a better choice. Both of these feature a bolt-on installation so you don't have to worry about welding and a zinc plating...
    view full answer...
  • 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
  • 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...
  • 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...
  • 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...
  • 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...

Do you have a question about this Brake Actuator?


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
Employee Wilson B
Updated by:
Wilson B
Employee Dustin K
Video Edited:
Dustin K

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