Replacement Axle for a Travel Trailer With a Dexter Axle
Updated 09/02/2025 | Published 08/08/2025 >
Question:
Hello, I have an axle on my travel trailer that has failed and I need to replace. Current axle is dexter B21-5650 3500 lbs axle. Can you recommend a replacement? Thanks, John
asked by: John
Expert Reply:
Thanks for reaching out, John!
I can definitely help you out! To get started, I’ll need a bit more information. The easiest way to get the information would be to send me a picture of the axle tag, as long as it's still attached a legible. That tag contains all the key details I'll need.
Another option you can contact Dexter directly and provide them with the axle number. They can usually send you a full build sheet with all the specifications. If you receive that, feel free to forward it to me, and I’ll take it from there.
The last option would be to measure the axle yourself, which may be difficult since it sounds like it's in pretty rough shape. I'll include a link to our FAQ that walks you though how to measure your axle. I also tossed in a few pictures of where to measure too. Hopefully you won't have to go this route.
I'll be awaiting your response!
Product Page this Question was Asked From
Dexter Trailer Axle w/ Electric Brakes - 5 on 4-1/2 Bolt Pattern - 89" Long - 3,500 lbs
- Trailer Axles
- Leaf Spring Suspension
- Standard Grade
- Electric Brakes
- 3500 lbs
- 5 on 4-1/2 Inch
- 74 Inch Spring Center
- 89 Inch Hub Face
- No Drop or Lift
- Dexter
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Dexter Nev-R-Adjust Electric Trailer Brakes - 10" - Left/Right Hand Assemblies - 3.5K
- Shop: TruRyde Electric Trailer Brakes - Self-Adjusting - 10" - Left/Right Hand Assemblies - 3.5K
- Article: Electric Trailer Brakes: How They Work & What to Buy
- Video: Feature Breakdown: TruRyde Electric Trailer Brakes
- Shop: Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 5 on 4-1/2 - Pre-Greased
- Shop: Mounting Hardware for 10" Brake Assemblies
- Shop: Trailer Hub and Drum Assembly - 3,500-lb Axles - 10" Diameter - 5 on 4-1/2 - Pre-Greased
- Q&A: Can Grease And Dust Be Cleaned From Brake Assemblies Using A Power Washer
- Q&A: Should Brake Shoes Be Replaced If They Have Been Exposed To Grease
- Shop: etrailer Electric Trailer Brakes - 10" - Left/Right Hand Assemblies - 3,500 lbs
- Shop: Replacement Shoe and Lining Kit for Manual Adjusting 10" Electric Brake Assembly - 3,500 lbs
- Search Results: trailer axle
- Search Results: trailer leaf springs
- Search Results: trailer hitch
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Search Results: trailer tires and wheels
- Shop: Trailer Wiring
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Measuring To Choose The Right Trailer Axle
- Shop: Suspension Enhancement
- Article: How to Measure for Trailer Hitch Drop
- Q&A: Instructions to Wire a Trailer for Electric Brakes
- Search Results: trailer wiring
- Q&A: What is a #84 Spindle and How Do I Know I Have One On My Trailer?
- Shop: Brake Controller
- Search Results: trailer jack
- Video: etrailer VS Dexter Self Adjusting Brakes Comparison





Gwendolyn Y.
9/2/2025
Hey John, Did you have a chance to get the axle tag details or contact Dexter for the build sheet? I'm here to help once you have that information!