What is Outer Diameter of Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube # KPG5-Q25-IP
Updated 09/26/2025 | Published 04/21/2025
Question:
what are the exact Outside dimensions of the gooseneck and 5th wheel adaptors? 3.965?
asked by: Ray H
0
Expert Reply:
Hey Ray, the Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube # KPG5-Q25-IP has an outer tube diameter that measures 4 inch by 4 inch. There might be some minor variances that could be around what you mentioned but it was intended to be 4 inch by 4 inch.
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Gooseneck to 5th Wheel Trailer Coupler Adapter - Inner Tube - Square - 25,000 lbs
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- Gooseneck Trailer to 5th Wheel Hitch
- No Extra Clearance
- 25000 lbs
- Replaces Inner Tube
- Not Shock Absorbing
- etrailer
more information >
Continue Researching
- Q&A: Meaning of MTI Number On Dexter Hub and Drum Assembly
- Q&A: Does Head of Fifth Wheel Hitch Need to Lock Out When Using Gooseneck to 5th Wheel Adapter
- Article: Gooseneck to 5th Wheel Adapters
- Q&A: Swing Away Tongue Kit For A 3" x 3" Trailer Tongue
- Article: Trailer Wiring Diagrams
- Article: Fifth Wheel Trailer Hitch Information and Installation Tips
- Q&A: What is Best Air Cushioned Fifth Wheel Pin Box
- Q&A: Recommended Brake Controller and Wiring for a Semi Trailer
- Q&A: Troubleshooting Blue Ox Patriot
- Q&A: Can I Replace 8-14.5 Tires with a Non-Metric Sized Tire
- Article: Best 5th Wheel to Gooseneck Adapters (2023)
- Article: Adapters for Towing a 5th Wheel Trailer with a Gooseneck Hitch
- Article: Trailer Lighting Requirements
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
Jameson C.
9/26/2025
Hey Ray, did the 4 inch by 4 inch dimensions work for your needs? I'm curious because it could help others who are looking for similar adapters.