Will the Demco Hydraulic Brake Actuator DM8758721 Fit a uhaul Trailer Coupler?

Updated 09/02/2025 | Published 08/06/2025

Question:

i have a old uhaul car hauler, it has a 4inch channel but comes with a 3inch adapter, the first 2 holes are 3 inch center to center. then from the first hole to the 3rd farthest hole is 10inch on center, would the DM8758721 bolt to this? i didnt see any measurements in the pictures or details. thanks a bunch

asked by: Jonathan

uhaul adapter
(click to enlarge)

Expert Reply:

Hey Johnathon, thanks for the measurements and the picture. The front two mounting holes on the Demco Hydraulic Brake Actuator item # DM8758721 are 3" on center. However, from the front hole to the center of the rear hole is going to be 12-1/2". This is the closest actuator we have that will fit your old uhaul mounting bracket.

How old is that car hauler?

expert reply by: Jerred H

Jerred H.

9/2/2025

Hey Johnathon, did you find a solution for mounting the Demco Hydraulic Brake Actuator on your old U-Haul car hauler? I'm curious to know how it worked out, as it could help others with similar setups.