Picking Out Replacement Actuator Shock for Gabriel MPD 85746

Question

Question:

have a boat trailer surge brake with a Gabriel mpd 85746 shock on it. is there a replacement shock I can use ? I can not find one on the internet

asked by: Tim

0

Expert Reply:

The best recommendation I can give you since we don't carry the Gabriel actuators would be to check out the link I attached that will take you to a page that has all of the actuator shocks we carry. On the product pages for each there will be dimensions for each that you can compare to the shock you are trying to replace.

You'll want to know the hole center to center dimensions when retracted and extended. If you can get me the brand or style of actuator you help that might help me find what you are looking for as well.

expert reply by: Jameson C

0

Erick

6/20/2025

Was there any resolution to this? I am looking for the same item

Jameson C.

6/23/2025

@Erick We never heard back. If you can get me the dimensions of what you need though maybe we have something that would work.

Patrick

7/5/2025

@JamesonC Bore; 1-5/8" Collapsed Length (in) 12.34 Extended Length (in) 19.88

Jameson C.

7/7/2025

@Patrick this is for a actuator shock? That's quite a bit of movement if so. Is there a brand or any other info you can see on the actuator?

See All (7) Replies to Erick ∨

Ted

9/19/2025

I have same problem with a Gabriel 610663. I don’t see the link to the product page with dimensions you mentioned.

Jameson C.

9/22/2025

@Ted Are you possibly looking for the Gabriel 61663 as that's a number I can find from Gabriel?

Answer 1

Unfortunately the Atwood 85736 cannot be replaced so you'd actually need an entirely new actuator. The closest replacement we have is the Demco Hydraulic Brake Actuator #DM72VR. This actuator has a gross towing weight capacity of 7,000-lbs, a…

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Answer 2

I do have an option for you but the coupler on your trailer is very old and we simply don't carry parts for them anymore as they were discontinued by the manufacturer. Therefore, the only option we can offer is a new coupler, the Demco Hydraulic…

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Answer 3

I do have a solution for you, but the Demco Hydraulic Brake Actuator #DM8101802 is made to fit the more common 3" wide trailer tongues, so the mounting bracket won't work with your 4" trailer tongue. Instead, I recommend the Demco…

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Answer 4

Your best route is to replace your entire surge brake assembly as Atwood no longer produces any parts for their brake actuators. The Titan Zinc-Plated Brake Actuator #T47457207K is going to be your best replacement available. It is specific to disc…

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Answer 5

Since we can't get the Atwood replacement shock anymore that you mentioned your best option would be to replace the actuator with a more reliable one like the Demco #DM72VR for if you have a drum brake setup or part #099-175-20 for if you have a…

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Answer 6

We do have what you need to replace the UFP HD-1377-10 hub and drum as well as add hydraulic brakes for your boat trailer. Here are the exact parts you will need: - Dexter Trailer Hub and Drum Assembly #84546UC3 - Hydraulic Trailer Brake Kit -…

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Answer 7

We have the perfect replacement for your Atwood 84132 drum brake actuator, the Demco #DM72VR. Just like your Atwood, the Demco is for hydraulic drum brakes, rated for 7,000 lbs instead of 6000 lbs, mounts to a 3" wide trailer tongue and fits a…

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Answer 8

The Replacement Master Cylinder Assembly #T4395100 will not work to replace your Atwood master cylinder model 85841. Since replacement parts for your actuator are obsolete, your only option is to replace the entire actuator assembly. The Demco…

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Answer 9

To replace your Dometic Duo Therm Air Conditioner Model 59516.601, you will want the Advent Air Replacement RV Air Conditioner for Dometic Setup item #ACDOM150 in white or item #ACDOM150B in black. This system will allow you to use your current…

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Answer 10

Hey John, yes the Everchill #EV27FR would fit in a 25 inch deep cabinet like you mentioned. This would be a really solid option to replace your Norcold so I think you should go for it. This is also our best fitting option for replacing what you have…

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Answer 11

We no longer carry the Atwood master cylinder you are looking for so your best option would be to replace the coupler. The coupler you have is the most problematic one we see by far so going to a better design will be your best long term solution. To…

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Answer 12

We actually have a video showing how to replace the master cylinder on an Atwood surge brake actuator like your part 85778 which I have linked for you to reference. In the video you can see that once you remove the 4 screws the master cylinder can be…

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Picking Out Replacement Actuator Shock for Gabriel MPD 85746

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