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

For U-bolts for your 3" x 3" frame you will want something that is slightly larger. If the measurements were listed as exactly 3" it isn't going to fit. What you need is the CE Smith U-Bolts - Galvanized - 3-13/16" Long x…

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Answer 2

Hi Eric! You are correct. The Kodiak Disc Brake Kit - 13" Rotor - 8 on 6-1/2 - Stainless Steel - 1/2" Bolts - 7,000 lbs #K2R712S would need an idler hub (like the Dexter Trailer Idler Hub Assembly - 5,200-lb, 6,000-lb and 7,000-lb Axles -…

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Answer 3

I would be happy to help you set up a disc brake system for you 2012 Tandem axle boat trailer. Let's start with an actuator you are going to want the Titan Zinc-Plated Brake Actuator - Disc - 2-5/16" Ball item #T4750800. This is a bolt on…

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Answer 4

You absolutely can! To lock the coupler latch of the Demco Hydraulic Brake Actuator #DM8104311 you were looking at to the hitch ball on your vehicle you will need to use the coupler lock #e98887 which gets inserted into the hole on the latch shown in…

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Answer 5

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 6

Hi Shayne; I wasn't able to find anything that corresponds with those tags or part numbers. However, based on the 12" rotor and the 6 on 5-1/2 bolt pattern the Kodiak Disc Brakes #KOD69FR you were looking at will likely fit. This is designed…

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Answer 7

I recommend the Dexter Zinc-Plated Model 10 Brake Actuator w/ Drop to replace your current Tie Down actuator. You will need either the Disc Brake Actuator #T4750620 or Drum Brake Actuator #T2478100. These both have a similar design as your current…

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Answer 8

Hey James, thanks for the information! To replace the inner member of your Dexter actuator we've got a couple of options depending on which one you actually have. The Model A60/A75/XR84 you have stamped on your is three different styles of brake…

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

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