Can Demco Surge Actuator Install on Trailer Tongue with Different Bolt Pattern

Question

Question:

how would the DM8104311 bolt to a 2013 Karavan boat trailer that has a four bolt and one pin pattern on the current unit. Ill get a picture and send it your way.

asked by: Clay F

0

Expert Reply:

Hey Clay, if the bolt pattern of your boat trailer does not match what is on the Demco actuator part # DM8104311 you have the option to redrill holes on the trailer to match the actuator or you can have the actuator welded to the trailer. I'd recommend just having it welded as that will be easier.

expert reply by: Jameson C

0

Clay F.

4/8/2026

I found and ordered the DX7.5 A -60 . It looks to be the OEM component replacement.

Jameson C.

4/8/2026

@ClayF awesome to hear!

Jon H.

4/10/2026

@JamesonC About the trailer actuator; it works great, but try to bolt it on as welding makes any future change a nightmare. Don't ask me how I know... Cheers, Jon Holcomb

Jameson C.

4/13/2026

@JonH haha yeah I can see that being difficult.

Answer 1

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Answer 2

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Answer 3

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Answer 4

The Demco Hydraulic Brake Actuator part #DM8104311 is a fit for trailer tongues 3" wide. If this is what you have then it will work well. If you are however looking for the bolt hole spacing then you can reference the attached photo.

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Answer 5

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Answer 6

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Answer 7

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Answer 8

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