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  1. Brake Actuator
  2. Demco
  3. Surge Brake Actuator
  4. Disc Brakes
  5. 2 Inch Ball Coupler
  6. 7000 lbs GTW
Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs

Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs

Item # DM62VR
Our Price: $318.85
Brake Actuator
Shipping Weight: 22 lbs
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Surge actuator has a corrosion-resistant composite master cylinder and zinc plating. EZ-Latch coupler is easy to use. Electric lockout activates automatically to keep brakes from actuating when in reverse. 1-800-940-8924 to order Demco brake actuator part number DM62VR or order online at Free expert support on all Demco products. Great prices and Fastest Shipping for Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs. Brake Actuator reviews from real customers.
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  • Reviews (43)
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Demco Brake Actuator - DM62VR

  • Surge Brake Actuator
  • Disc Brakes
  • 2 Inch Ball Coupler
  • 7000 lbs GTW
  • Bolt-On
  • Electric Lockout
  • Straight Tongue Coupler
  • Demco

Surge actuator has a corrosion-resistant composite master cylinder and zinc plating. EZ-Latch coupler is easy to use. Electric lockout activates automatically to keep brakes from actuating when in reverse.


  • Hydraulic actuator activates trailer's brakes when tow vehicle slows or stops
  • Electric reverse lockout lets you back up without actuating trailer brakes
    • Solenoid activates automatically when you shift into reverse
  • 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 excellent corrosion resistance
    • 120-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 2-1/2" x 4-1/2" Grade-5 bolts (not included) for mounting
  • Made in the USA


  • Application: trailers with hydraulic disc brakes
  • Ball size: 2"
  • Gross towing weight: 7,000 lbs
  • Maximum tongue weight: 700 lbs
  • Mounting: straight, 3" wide trailer tongue
    • Bolt holes are 3" apart on center
  • Model number: DA70
  • 1-Year warranty

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

Cast Coupler Cutaway

This coupler 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. Disengaging the coupler is just as effortless. Simply lift up the handle and the coupler socket will automatically release its grip on the ball.

Demco EZ-Latch in Use

The contoured, low-profile design of the latch handle helps protect the coupler from damage by allowing any potential hazards - from debris on the road to your ball mount backing into the coupler - to simply slide over the top. This helps prevent anything from getting under the latch handle and releasing the ball, and it can also limit any damage to the coupler should an impact occur

Unlike most couplers, which have a pin hole on the handle latch, the EZ-Latch coupler features a hole on the side of the coupler itself. Inserting a coupler lock through this hole will keep the latch from lifting, preventing disconnect and theft.

Electric Reverse Lockout

The electric reverse lockout on this trailer brake actuator is automatically activated when you shift your tow vehicle into reverse. The solenoid wires into your trailer connector - which connects to your tow vehicle - so that it can detect when you are in reverse. When your vehicle is in reverse, the solenoid ensures that the hydraulic actuator does not activate your trailer's brakes, thus allowing you to back up your rig. To use the lockout feature, you must have a 5-pole flat, 6-way round, or 7-pole trailer connector.

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 120-hour salt spray rating. In addition, the composite master cylinder is made of corrosion-resistant glass-reinforced nylon to further ensure durability.

8705101 Demco DA70 Hydraulic Trailer Brake Actuator for Disc Brakes - Electric Lock-Out - 2" Ball Coupler - 7,000 lbs
Replaces DA66

Customer Satisfaction Score:

Customer Reviews

Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs - DM62VR

Average Customer Rating:  4.6 out of 5 stars   (43 Customer Reviews)

Surge actuator has a corrosion-resistant composite master cylinder and zinc plating. EZ-Latch coupler is easy to use. Electric lockout activates automatically to keep brakes from actuating when in reverse.


Best brake actuator I have ever used. Had issues with my brake line fitting up to the actuator and George J helped me trouble shoot the problem and got it resolved in no time. Best price, best product and superior support staff. I would not hesitate to purchase any product from them at all and will definitely use them in the future for all my trailer needs.



After using this product for a year I will have to say it is still the best product I’ve ever used. I would recommend using it for your own personal use.


This actuator works great with the brakes and love the easy “click” hookup. Would highly recommended



This actuator works great! Really easy to connect and disconnect it. I highly putting this on your boat trailer.


The whole staff at etrailer bent over backwards to make sure I was satisfied with the installation of brakes on my trailer. Have made several purchases from them always satisfied with parts and service. Special credit to Jamie great to deal with. Answered all my questions and was very knowledgeable.


After spending a long time on the phone with etrailer sending Pictures, they told me this is what I needed. Well Ordered and didn't have time right away to install, since it was snowing. This wasn't even close. Wasted couple hundert bucks on the wrong part.


I recently replaced my old actuator. Price and delivery was very good. after the install we went to bleed the brakes and the master cylinder was defective. Called Demco and they immediately knew the issue because they have been having problems.They shipped a replacement master cylinder to be installed by us. Good customer service by Demco but caused labor costs to be more than double original estimate.


I received the actuator and unfortunately the master cylinder appears to be defective and I could not get it to pump any fluid at all. I thought maybe I was doing something wrong with the install (although we're dealing with simple physics)and called etrailers but they had nothing to add. To etrailers credit, they are to send me another unit via express tomorrow (no shipments on Sunday). Will post an update on the new unit.


The videos really helped convince me the Demco was the one to buy. Came on time. Is exactly what I expected. Nice hitch. MUCH better design than the old actuator hitch, which had become disfunctional.


Product was exactly as advertised. Shipping date kept getting pushed back and the item arrived much later than anticipated.


Hit brakes trailer stops. That's what I want it to do and that's what it does.


Excellent replacement for my 2008 EZ Loader trailer


Excellent support from Nicole in helping me confirm availability of all my material needs for my boat trailer brake upgrade from Drum to Disk. Have not actually done the install but parts arrived a day early and look to be high quality. This actuator is a perfect fit to replace my old drum brake surge actuator. Thanks Nicole!!


I guess I didn’t read enough, I wanted an actuator that did both drum and disc. Now just ordered a disc brake kit which is what I wanted just not now, but I know I’m better off that it’ll be done all at once.


It was delivered very quickly and on my doorstep. I bought this to put on a Tow Dolly I purchased to pull my car behind my motorhome. The surge brake will make it much safer going through the mountains on my way south. I also feel the price was great.


Exactly what I needed. Great online documentation. Speedy delivery


SO far so good the unit showed up very quickly and I like the self locking unit. It should have keeper pin included with it other than that I like the design.


Excellent quality. I had to drill an extra hole for mounting, no problem. No manual for bleeding or parts breakdown was included so I downloaded the manual from Demco website.


This actuator has great features at an exceptional price. Also, it's proudly made in the USA!


Easy to install works great fast shipping thanks!


Excellent service as usual. The part was on backorder just like everything else. They were in constantly in contact keeping me updated. Hopefully I'll get to install it after the holiday.


Great service and fast delivery




Very polite fast shipment


Nice replacement for old out of date surge coupler. Fast shipping, and everything seems to work like it should. Wish that etrailer would include the factory Demco install manual, but was able to find it on the web.


Have not yet installed. Product looks excellent, exactly as described. shipping was fast.


Show More Reviews

See what our Experts say about this Demco Brake Actuator

  • Can a Surge Brake Actuator for Drum Brakes Be Compatible with Disc Brakes?
    Most brake actuators for drum brakes like your Dico 6000 lb cannot be used for disc brakes. This isn't based on weight capacity, but rather based on the pressure the master cylinder can handle. Most drum brake systems give you 1000 to 1200 psi, and disc brake systems require more with most rated at 1600 psi. The actuators are specific for disc or drum because drum brakes with a disc brake actuator would give too much pressure and in your case, the drum brake actuator will not give enough...
    view full answer...
  • What Hardware Is Needed for Installing Demco Hydraulic Brake Actuator # DM62VR
    The correct hardware to use to install the Demco surge actuator part # DM62VR is 1/2" x 4-1/2" Grade-5 bolts which we don't offer. This would be super easy to track down at a local hardware store though.
    view full answer...
  • Recommended Surge Brake Actuator To Replace Discontinued Atwood 61101 on Pacific Boat Trailer
    For a replacement for your Atwood 61101 I recommend the Demco Hydraulic Brake Actuator # DM62VR. This actuator is designed to work with disc brakes and fits a 3" wide trailer tongue with bolt holes 3" apart on center. It comes with an electric reverse lockout and uses an EZ-Latch coupler for a simple hookup and disconnect. It also features a zinc plating finish for corrosion resistance. I have attached a review video for your reference.
    view full answer...
  • Demco Hydraulic Surge Brake Actuator Compatibility with Kodiak Disc Brakes
    The Demco Hydraulic Brake Actuator w/ Electric Lockout # DM62VR does not hold residual pressure in the brake line when the surge brake is not being pressed. This will allow you to use it with the Kodiak disc brakes on your trailer.
    view full answer...
  • Weight of Demco Hydraulic Brake Actuating Coupler
    Minus the packaging, the Demco # DM62VR Hydraulic Brake Actuating Coupler weighs about 18 lbs. The coupler is compatible with trailers weighing up to 7000 lbs with disc brakes. The coupler fits a 2 inch trailer ball, and is equipped with an electric lockout solenoid that will prevent the brakes from engaging when the tow vehicle is shifted into reverse, assuming that the coupler is installed correctly and the center pin of the 7-way on the tow vehicle is tied into the reverse lamp circuit. If...
    view full answer...
  • Replacement for Atwood Surge Brake Actuator 85778
    The replacement I recommend for an Atwood Surge Brake Actuator 85778 is the Demco Hydraulic Brake Actuator part # DM62VR. It has the same ball size, offers a bolt-on install, and has a greater capacity. The only difference is it has an electric lockout as opposed to a manual one.
    view full answer...
  • Disc Brake Compatible Replacement for Tie Down Model 660 Surge Brake Actuator
    In regards to surge brakes, disc brakes require a much higher psi than drum brakes for proper operation therefore the two types of brake actuators (disc/drum) are not cross-compatible. The Demco Hydraulic Brake Actuator part # DM62VR would be a great disc brake compatible replacement for a Tie Down Model 660. It has an electric lockout which you can use to prevent the brakes from locking up while in reverse but it does not have to be hooked up.
    view full answer...
  • Troubleshooting Demco Hydraulic Brake Actuator # DM62VR
    I spoke to my contact at Demco and he told that the Demco Hydraulic Brake Actuator # DM62VR should not slam forward when you slow down. He said this brake actuator is inertia based, meaning as you start to apply the brakes it will begin to slowly activate your trailer's brakes. It should not be where the brake actuator slams forward as you say. There are a couple of things he said that could be causing the problem. The first thing he said could be the issue are the bolts that hold the...
    view full answer...
  • Replacement Titan Model 60 Actuator for Disc Brakes
    We have exactly what you are looking for. The disc brake version of your current Titan Model 60 is part # DM62VR. This actuator fits a 3 inch wide channel, and has a maximum weight capacity of 7,000 lbs. The coupler is compatible with 1-7/8, 2 inch of 50mm trailer balls. This actuator will supply the higher psi needed to actuate your new disc brakes properly.
    view full answer...
  • Recommended Replacement Surge Brake Actuator for Karavan Boat Trailer
    I was able to do a little bit of research and it looks like the Karavan trailer you're referring to had a 7000-lbs surge actuator. To replace that I recommend using the Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc - Zinc - 2" Ball - 7,000 lbs # DM62VR, which will bolt onto a 3" wide channel tongue and gives you a durable zinc-plating that's going to stand up to rust and corrosion really well. This actuator has an electric lockout to allow for backing up without engaging the...
    view full answer...
  • Bolt Pattern of 7k Demco Hydraulic Brake Actuator For Disc Brakes
    The top bolts are 3 inches apart on center, and the bottom bolt is 2 inches underneath those (and directly in the middle of the top bolts) for the 7,000 lb Demco Hydraulic Brake Actuator w/ Electric Lockout - Disc Brakes # DM62VR. You'll need 2-1/2" x 4-1/2" Grade-5 bolts for the install of the # DM62VR, and I have added a link below to a video install for you which may help.
    view full answer...
  • Solution for Converting Trailer with Atwood Drum Brake Surge Actuator to Disc
    Some people have had luck punching out or removing the check valve in their drum brake actuator master cylinders to allow them to be used with the higher PSI requirements of disc brakes but the manufacturers of the actuators will not endorse this so we can't either. If Atwood replacement parts were still available the easiest solution would be to replace the master cylinder with the correct disc brake master cylinder. Since that's not possible the best solution would be an all new actuator...
    view full answer...
  • How Does Reverse Lockout Solenoid of Demco Surge Actuator # DM62VR Wire Up
    The reverse lockout solenoid wiring of your # DM62VR is not polarity specific. This means that you can use either as the power wire or the ground from your reverse light circuit. As long as one has power and the other ground you are good.
    view full answer...
  • Correct Replacement Actuator for a 2004 Nitro 911CDC on Trailstar Trailer
    The Demco surge disc actuator part # DM62VR would be a great option for your Trailstar trailer that has disc brakes to replace your Tie Down 70LC. This was designed for 2 inch hitch balls, has a very easy to use coupler design, and comes with an electric reverse lockout.
    view full answer...
  • Bleeding Trailer Brakes After Installing Kodiak Disc Brake Kit
    When bleeding the brakes on your trailer after installing the Kodiak Calipers you will first want to start with the brake that is furthest away from the actuator. Of the two bleeder valves, you will want to the bleeder valve that is on the top of the system. If you're manually bleeding the brakes, it would be easier to use a clear jar to collect the brake fluid so it would be easier to see if there are bubble or not in the fluid. Be sure to open the top bleeder valve when you are bleeding...
    view full answer...
  • Picking Out Brakes for 2003 Mastercraft Maristar 210 Boat Trailer
    I am sure we have a suitable replacement surge actuator for your trailer. But when I tried to look up your trailer on google every one of the pictures had the coupler cut off. If you could send me a picture of your coupler as well as the weight of your trailer when loaded I can give you our best recommendation. Do you need brake assemblies as well? That's the part that fits behind the hub/drum.
    view full answer...
  • Replacement Disc Brake Surge Coupler for 2004 Nitro Boat Trailer
    We can help you with a new surge brake coupler for your straight-tongue boat trailer. Your photo shows a label indicating the old coupler is designed for disc brakes which will use a coupler with higher pressure than a coupler for drum brakes. For a 7K disc brake coupler you can use Demco part # DM62VR which includes an electric lockout feature. It fits a 3-inch wide channel tongue and uses 1/2 x 4-1/2 Grade-5 bolts for mounting.
    view full answer...
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  • Is There any Adjustability with Trailer Surge Brakes
    Surge brakes do not have any adjustability. If you want to use them on steep hills your solutions would be best. Or you can look into an electric over hydraulic setup which will allow you to use a brake controller to activate the brakes. This gives you total flexibility and control. I attached a help article to this page that would walk you through the entire process of adding EOH brakes to a trailer like yours.
    view full answer...
  • 7k Rated Surge Brake Actuator for Disc Brakes Similar to Titan Model 60
    We do have a 7k disc brake surge actuator that fits a 2 inch ball with the Demco part # DM62VR which will easily fit in place of what you have now. It's not a Titan but the Demco actuators are super solid
    view full answer...
  • Do You Have To Switch Brake Actuators When Going from Drum to Disc Trailer Brakes
    Yes, if you switch from drum to disc brakes you will need a new actuator as disc brakes require a higher psi than drum. The Demco Hydraulic Brake Actuator part # DM62VR is a great option for trailers under 7,000 lbs. It mounts to a 3" wide trailer tongue and has an electric lockout for reversing. I have attached a full list of option below if the above does not work.
    view full answer...
  • What is the Correct Amount of Brake Fluid for the Demco Disc Brake Actuator # DM62VR
    According to Demco, you will want to fill the brake fluid reservoir 3/4 of the way full with new DOT 3 or DOT 4 brake fluid. If you are bleeding the brakes, you will want to check the brake fluid level to ensure that it remains above half full during the bleeding process. Once you have finished bleeding the brakes, you can fill it to 3/4 full.
    view full answer...
  • Actuator/Coupler Replacement for 85841 on Sea Ray Boat Trailer
    Since your trailer has disc brake it will be very important that you pick out a actuator/coupler that is rated for that and not drum brakes as that is a lower pressure rating that won't work well. The 85841 is no longer made so it would be tough to find so I would recommend going with a new coupler setup like the # DM62VR which you could bolt onto your frame once you cut off the older welded on model. If you wanted to weld this in place of what you have you certainly could do that as well.
    view full answer...
  • Correct Replacement for Disc Brake Demco DA66B Actuator
    The correct replacement for a Demco DA66B Actuator is the Demco Hydraulic Brake Actuator part # DM62VR. This will be a direct bolt-on replacement for the existing model, no drilling required. It uses a three hole pattern but the two holes will match the ones you have now and you can choose to drill the third lower hole or just use the top two. There are only two required. The brake line fittings will be the same.
    view full answer...
  • Do All Install Holes of Demco Surge Actuator Need to Be Used
    You would need to use all of the install hardware holes of the Demco Hydraulic Actuator part # DM62VR for it to be a safe install.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Ryan G
Installed by:
Ryan G
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Mike S
Written by:
Mike S

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