1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Drum Brakes
  5. 2 Inch Ball Coupler
  6. 8600 lbs GTW
Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,600 lbs

Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,600 lbs

Item # DM8608601
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Brake Actuator
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DM8608601 - Bolt-On Demco 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. Call 800-298-8924 to order Demco brake actuator part number DM8608601 or order online at etrailer.com. Free expert support on all Demco products. Guaranteed Lowest Price and Fastest Shipping for Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,600 lbs. Brake Actuator reviews from real customers.
  • All Info
  • Reviews (13)
  • Q & A (6)
  • Videos (1)
  • Photos
  • Why etrailer?

Demco Brake Actuator - DM8608601

  • Surge Brake Actuator
  • Drum Brakes
  • 2 Inch Ball Coupler
  • 8600 lbs GTW
  • Bolt-On
  • Demco
  • No Lockout
  • Straight Tongue Coupler

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
  • 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
  • Large rear rollers allow for easy movement and smooth operation
  • Breakaway included
    • Snap hook on safety cable ensures secure connection to breakaway lever
  • Heavy-duty steel construction with sturdy, reinforced outer casing
  • 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: 8,600 lbs
  • Maximum tongue weight: 860 lbs
  • Mounting: straight, 3" wide trailer tongue
  • Model number: DA86
  • 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.

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.

8608601 Demco DA86 Hydraulic Trailer Brake Actuator for Drum Brakes - 2" Ball Easy-Latch Drop Coupler - 8,600 lbs

Video of Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,600 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 - DM8608601 Review

Today we're going to be taking a look at part number DM8608601. This is a Demco Hydraulic Brake Actuator for a 2 inch hitch ball. The hydraulic actuator is going to activate your trailer's brakes when the tow vehicle slows or stops. We're just going to go over a few features of this unit real quick. Right up here upfront it's going to have the easy latch coupler mechanism for simple secure hook up and disconnect. This unit is going to let you up hook up when the latch is actually in a closed position, so you never really have to have to open it up to connect it to your hitch ball. All you have to do is line up the coupler directly over the hitch ball, drop the coupler over the ball, and the latch is going to snap in place automatically. It's also going to have a nice little quarter inch hole right here to install a coupler pin or a pin and lock.

If we take a measurement of the outside brackets, here, you need to make sure that coupler pin or coupler lock has a span of about 1 and one eighth of an inch. The unit has a zinc plating that's going to offer corrosion resistance. It is tested with a 200 hour salt spray rating. I'm going to flip it over so you can see the master cylinder. It's a composite master cylinder, so it's going to be durable and efficient. It's going not feature the glass reinforced nylon construction that's designed to resist rust and corrosion. It's also going to feature the nice large reservoir.

Reservoir cap is going to be here at the top. That's going to have increased capacity for brake fluid. To gain access into that reservoir, all you have to do is unthread the cap, and then it has a nice large hole there to get your brake fluid in, change it if necessary. It's got a large reservoir. It's got the automotive style cap that's going to create completely enclosed system that's going to help prevent contamination of the fluid. This unit features large rear rollers that's going to allow for easy movement and smooth operation.

You can see back here it's going to have this little cap. That's going to be where you're going to connect the trailer brakes, the trailer brake line from the trailer. Here's going to be the large rollers, that I just talked about. The brake away kit is included. That's going to be this cable and this hook here. The hook's going to secure it to the vehicle that's towing.

It's got the snap hook. It's going to ensure a secure connection to the brake away lever. It's going to make sure it doesn't come disengaged. The unit is made from a heavy duty steel construction with a sturdy reinforced outer casing. This is a bolt on installation. It's going to require a half inch by 4 and a half inch grade 5 bolts. Those are not included. That's for mounting this on to a 3 inch straight trailer tow. This is designed for trailers with hydraulic drum brakes. It's going to have a ball size 2 inch. Gross towing weight is 8600 pounds with a maximum towing weight of 860 pounds. It is designed for the straight trailer tow, 3 inch wide. This unit is going to be model number DA86. A specific note that we want to include is because this actuator does not include a reverse lock out, it is going to be recommended that you equip your trailer with free backing brakes so that you can drive in reverse without the actuator triggering your trailer's brake system. One last measurement. I just want to give you a measurement of the overall length from end to end. That's going to give us a measurement of 21 and a half inches. That's going to do it for today's review of part number DM8608601. This is the Demco Hydraulic Brake Actuator for a 2 inch hitch ball. .

Customer Reviews

Demco Hydraulic Brake Actuator - Drum - Zinc - 2" Ball - 8,600 lbs - DM8608601

Average Customer Rating:  4.8 out of 5 stars   (13 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.

- DM8608601

Customer service over the top...Thank you! Product received, everything I expected! 580960

- DM8608601

Easy install. Well made. Thought maybe for [the price] the grade 8 install bolts and nuts may be included, but not so. Have not towed the trailer yet, but see no reason for it not to function well. 668444

- DM8608601

The whole process from ordering to receiving and installing was fantastic. The hitch came faster than expected and the process to unbolt the old one and install the new one only took about 20 minutes. Highly recommend this product and the company. 691248

- DM8608601

Bent pins on one assembly and had to be removed to straighten before installation. Seems to have been dropped some time during shipping or handling. 403102

- DM8608601

We have just completed rebuilding 16 concrete trailers and converted all of them to this brake actuating couopler. We needed a 2" ball on a heavy hitch since the trailer and concrete weigh 5,500 to 6,000 lbs, I didn't want to push a lighter duty hitch to it's max weight. These trailers pull concrete 7 days a week and I have been happy with their performance. 476653

- DM8608601

Working great 744519

- DM8608601

This is the second time our company has ordered this item from etrailer. excellent customer service from a company that truly appreciates it's customers. I got the part I ordered with no issues and it is a quality item as well. We were replacing one on a trailer that had failed. Thank you again 723274

- DM8608601

This product was a suggestion to replace a back ordered more expensive unit. Actuator fit my trailer well and I was up and running in two days. Great service and good price!! 698199

- DM8608601

have not installed it yet, but looks heavy duty enough for the job 594398

- DM8608601

Our shop just had to replace this with one that was bent up on a trailer. swapped like for like. No issues. Appreciate the good service from Etrailer. 592439

- DM8608601

This company is one of best dealings that I have had. the customer service was excellent and everyone was extremely helpful with my order. Shipping was fast and exactly what I needed! I highly recommend doing business with them! 546896

- DM8608601

After multiple consultations I was able to obtain an actuator that seems to be perfect. The staff was very professional in answering questions and taking care of a return. They are great to work with. My only suggestion is that in the interest of Best Practice the actuator should be sold with the appropriate manufactuter tecommended bolts, lock washers and nuts. 544590

- DM8608601

Carla M. worked with me to make sure we had all the right parts for my boat trailer. I am quite happy with her help. 324571


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Info for this part was:

Edited by:
Leah B
Written by:
Lindsey S
Expert Research:
Jameson C
Updated by:
Laura H

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