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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 - Drum - Zinc - 2" Ball - 8,000 lbs

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

Item # DM8609101
Our Price: $262.32
Brake Actuator
This item qualifies for Free Shipping
Shipping Weight: 37 lbs
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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. Trigger-style coupler latch is easy to use. Bolt-on application. 1-800-496-5010 to order Demco brake actuator part number DM8609101 or order online at Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (2)
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Demco Brake Actuator - DM8609101

  • 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. Trigger-style coupler latch is easy to use. Bolt-on application.


  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • Leverlock coupler mechanism ensures simple, secure hookup and disconnect
    • Trigger-style latch is easy to use
  • 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
  • Acetal copolymer lining provides smooth operation as actuator telescopes in and out
  • Breakaway included
    • Snap hook on safety cable ensures secure connection to breakaway lever
  • Heavy-duty steel construction
  • 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
  • Model number: DA91
  • 1-Year warranty

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.

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.

8609101 Demco DA91 Hydraulic Trailer Brake Actuator for Drum Brakes - 2" Ball - 8,000 lbs

Customer Satisfaction Score:

Customer Reviews

Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,000 lbs - DM8609101

Average Customer Rating:  5.0 out of 5 stars   (2 Customer Reviews)

Surge-type actuator features a corrosion-resistant composite master cylinder and durable zinc plating with a 200-hour salt spray rating. Trigger-style coupler latch is easy to use. Bolt-on application.


nice heavy duty well built actuator, a little modification from my prior actuator but, doable.



See what our Experts say about this Demco Brake Actuator

  • Will 6,000 lb Surge Brake Actuator for Drum Brakes Work on Single Axle Boat Trailer
    The Demco Hydraulic Brake Actuator # DM8609101 will work great for you; the 8,000 lb tow rating and 800 lb tongue weight rating are just the maximum capacities for the actuator and you won't have an issue with your single-axle boat trailer being under that weight rating. The Demco # DM8609101 actuator is designed for use with trailers that have drum brakes and it will fit a 2 inch hitch ball, which you'll want to also keep in mind.
    view full answer...
  • What Are The Mounting Hole Dimensions Of The Demco Hydraulic Surge Brake Actuator DM8609101
    We sure do! The Demco Surge Brake Actuator # DM8609101 you were looking at has mounting holes that are 3" apart from the front hole to the second hole, 9-1/2" apart from the second hole to the last hole, and 12-1/2" apart between the front and rear holes as you can see in the included diagram.
    view full answer...
    Image 1 for
  • How to Bleed Demco Surge Brake Actuators
    I attached a picture that shows how all Demco surge actuators like the # DM8609101 should be bled.
    view full answer...
    Image 1 for
  • Installation and Mounting for the Demco Hydraulic Brake Actuator
    I looked on Demco's website and was able to pull some information and diagrams on how you would mount the Demco Hydraulic Brake Actuator item # DM8609101. I have attached them below. I was not able to find any pictures of this Actuator installed. The installation is pretty straight forward though. It mounts to the top of a 3" wide trailer tongue with three 1/2" x 4-1/2" grade-5 bolts. These bolts are not included. This kit does not include a lock out kit so you will need the Manual Reverse...
    view full answer...
    Image 1 for Image 2 for
  • 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...
  • Difference Between Titan T63FR and T4500600 Hydraulic Trailer Brake Actuating Coupler
    There is no difference between the Titan # T63FR and T4500600. The T4500600 is Titan's part number, and # T63FR is the part number we use. Same product, different part number.
    view full answer...
  • What Hydraulic Brake Actuator do You Recommend for My Military Trailer Model M1102?
    For the available specs I have available for your M1102 military trailer, the trailer itself has drum brakes with a maximum GVWR of 4200 pounds. The specs also indicate that the trailer already has free-backing plates. With that information and the additional factor of a 3-inch wide tongue, I recommend the Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,000 lbs # DM8609101. This actuator comes with zinc plating for corrosion resistance and includes a lever lock coupler mechanism...
    view full answer...
  • Replacement Parts For Surge Drum Brake Actuator
    I will be able to help you with the parts you need based on your axle capacity. Your axles are rated at 3,200 lbs. You will need the following items for your surge brakes. You have a hydraulic brake actuator. If you are using a 2" ball with your boat trailer, you can replace your existing actuator with the Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,000 lbs, part # DM8609101. While it is rated for 8,000 lbs, if your trailer is only rated for 4,000 lbs, you must adhere to...
    view full answer...
  • Replacement Brakes for Sailboat Trailer With 3500 lb Single Axle
    A 3500 lb axle would typically use a L68149 inner and L44649 outer wheel bearing and the hub would have a 5 on 4-1/2 inch bolt pattern so you'll want to confirm that by pulling a hub and getting the reference numbers off the cages of your existing bearings. If this is what you have, then you do indeed have a 3500 lb axle and the parts I recommend below will be based on that assumption. If the above is true, you'll have 10 inch brake assemblies, and I'd recommend # 40716-15 galvanized brake...
    view full answer...
  • Replacement Hydraulic Drum Brake System for a Single Axle Magic Tilt Boat Trailer
    Yes, you have done your research well. These parts will fit together and allow you to back up without needing anything else. I can confirm that Demco Hydraulic Brake Actuator item # DM8609101 will work with the Hydraulic Trailer Brake Kit - Uni-Servo - Dacromet - 10" - Left/Right Hand Assemblies - 3.5K item # AKUBRK-35-D. These brake assemblies are compatible with the Easy Grease Trailer Hub/Drum Assembly for 3.5K Axles - 10" Diameter - 5 on 4-1/2 - Galvanized item # AKHD-545-35-G-EZ-K....
    view full answer...

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Info for this part was:

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Expert Research:
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