What is Mounting Bolt Pattern of Demco Trailer Coupler # DM89FR
Updated 08/15/2025 | Published 07/18/2025
Question:
What is the measurements of the bolt pattern?
asked by: Bill B
0
Expert Reply:
Hey Bill, the bolt pattern of the Demco Trailer Coupler # DM89FR that you referenced is 4-1/2 inch square which means the holes are separated by 4-1/2 inches vertically and horizontally. What bolt pattern do you need for your trailer?
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Demco Trailer Coupler - Cast - Flat Plate Mount - eZ-Latch - Zinc - 2-5/16" Ball - 21,000 lbs
- Flat Mount Trailer Coupler
- Fixed Coupler
- Bolt-On
- 20001 - 25000 lbs GTW
- 2-5/16 Inch Ball Coupler
- Auto Latch
- 5/8 Inch Diameter
- Demco
more information >
Continue Researching
- Q&A: Replacement Wheel for 15" Lionshead Silver Lynx Trailer Wheel
- Q&A: Recommended Coupler Lock for Demco EZ-Latch Coupler
- Q&A: Does Demco DM89FR EZ Latch Flat Plate Coupler Need Locking Pin In Place At All Times
- Q&A: Tankless Water Heater Replacement Upgrade For A Suburban SW6DEL Water Heater
- Q&A: Overall Height of the 2-5/16" Hitch Ball # C40085
- Q&A: Fifth Wheel Solution for Cab and Chassis Truck
- Q&A: Replacement Brakes for an AL-KO Axle. Can I Use Heavier Brakes?
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Brake Controller Installation: Starting from Scratch
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Trailer Maintenance Schedule
- Article: Trailer Couplers
- Article: How to Accurately Measure Trailer Leaf Springs
- Article: Trailer Wiring Diagrams
Jameson C.
8/15/2025
Hey Bill, did the 4-1/2 inch square bolt pattern work for your trailer? I'm curious to know if it was the right fit to help others in similar situations.