Which Replacement Pin Box for 5th Wheel with Fabex 520 Pin Box
Published 05/01/2021 >
Question:
I currently have a Fabex 520 pin box on my fifth wheel that I need to replace. I’m having trouble figuring out which model I need. Can you help me out with the models that are available?
asked by: Ken H
Expert Reply:
To replace your existing Fabex 520 pin box I recommend using the Reese 5th Airborne # 5AB-S500-700, which will provide you with a smoother ride because of the Air Ride coupler. This will be a nice upgrade for your 5th wheel and has a 21k capacity, so it'll work on most applications. If you need a rotating turret pin box then you can use the 5th Airborne # RP61412, which has a 16k capacity. Both of these pin boxes are compatible with a Fabex 520.
I've also linked some review videos of these pin box replacements for you to check out, as well as our entire selection of Fabex 520 pin boxes for you to check out if you're looking for something different.
Product Page this Question was Asked From
Lippert 1621SHD 5th Wheel Pin Box - 21,000 lbs
- 5th Wheel Pin Box
- Standard Replacement
- 21000 lbs
- Rigid Suspension
- Fixed Turret
- Lippert 1621SHD
- Lippert
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: used fifth wheel hitch
- Search Results: fifth wheel hitch
- Shop: Shocker 5th Wheel to Gooseneck Pinbox for Lippert 1716/1116/0115 and Fabex - 24K GTW - 6K TW
- Shop: B&W 5th Wheel Setup w/ Replacement Gooseneck Pin Box - Lippert Rhino - 25K GTW - 3.25K TW
- Shop: Fifth Wheel Hitch
- Shop: B&W Companion OEM 5th Wheel Hitch for Chevy/GMC Towing Prep Package - Dual Jaw - 20,000 lbs
- Shop: MORryde GooseTech 5th Wheel to Gooseneck Pin Box for Trailers Under 11.5K w/ Lippert 1716
- Q&A: Is the 5th Airborne Pin Box # 5AB-S500-700 a Replacement for a LIPP1116 Pin Box
- Video: Best 2025 Chevrolet Silverado 2500 Fifth Wheel Trailer Hitch Options
- Video: The Low-Down on the Curt Rota-Flex 5th Wheel Pin Box
- Q&A: Recommended 5th Wheel Hitch for a 2023 Chevy Silverado 2500 w/out the Factory Puck System
- Q&A: Dimensions For MORryde Cushioned 5TH Wheel Pin Box 1716 Replacement
- Q&A: Recommended Goosebox For 2008 Keystone Montana 3485SA
- Q&A: Bolt Hole To King Pin Measurement For The Lippert 1716 5th Wheel Pin Box
- Q&A: Dimensions Of Lippert 1716 Pin Box # LC1324791
- Shop: B&W Companion OEM 5th Wheel Hitch for Chevy/GMC Towing Prep Package - Dual Jaw - 20,000 lbs
- Shop: B&W Companion 5th Wheel Trailer Hitch - Dual Jaw - 20,000 lbs
- Shop: Lippert 1716 5th Wheel Pin Box - 15,500 lbs
- Q&A: Is There a Reese Goosebox to Replace a Fabex 520 Pin Box
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Wiring
- Search Results: trailer wiring
- Article: How to Measure for Trailer Hitch Drop
- Shop: Suspension Enhancement
- Video: B&W Companion OEM 5th Wheel Hitch Manufacturer Breakdown
- Search Results: trailer tires and wheels
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box



