Should Demco Surge Actuator DM8104002 be Welded or Bolted On
Updated 12/15/2025 | Published 11/06/2024 >
Question:
What size bolts and nuts are recommended for the mounting for the actuator DM8104002. my trailer tongue is 3 inches wide. Thanks
asked by: Warren
0
Expert Reply:
Hey Warren, so we don't have a recommended size of hardware to use with the Demco Coupler part # DM8104002. This is technically a weld on actuator so your best option would be to have a welder install it.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Demco Surge Brake Actuator w Electric Lockout - Disc - Primed - 2-5/16" Ball - 12.5K
- Brake Actuator
- Surge Brake Actuator
- Farm Trailer
- Boat Trailer
- Construction Trailer
- Travel Trailer
- Utility Trailer
- Weld-On
- 12500 lbs GTW
- 2-5/16 Inch Ball Coupler
- 3 Inch Channel Tongue
- Disc Brakes
- Electric Lockout
- Demco
more information >
Featured Help Information
Instructions
Continue Researching
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Q&A: Can Demco Surge Actuator Install on Trailer Tongue with Different Bolt Pattern
- Q&A: Replacement Surge Brake Actuator To Replace Tie Down Model 125 12,500LB Drop Actuator
- Q&A: Replacement Actuator for a TDE Model LP7000
- Q&A: DA91 Demco Disc Brake Actuator for 2-5/16 Hitch Ball with Electric Lockout Needed
- Q&A: Replacement Reservoir Tank for Lippert Hydraulic Power Slide Out Unit
- Q&A: Disc Brake Upgrade on a 2012 Tandem Axle Boat Trailer
- Article: We Used 34 RV Tow Bars, and These are the Best for Flat Towing
- Article: How to Measure for Trailer Hitch Drop
- Article: Replacing the Bearing, Races and Seals on a Trailer Hub
- Article: How to Bleed Your Trailer Surge Brakes
- Article: Trailer Wiring Diagrams
- Article: Adding Electric Over Hydraulic Disc Brakes


Jameson C.
12/15/2025
Hey Warren, were you able to have the Demco actuator welded onto your trailer tongue? Knowing how the weld turned out could help others planning a similar setup.