What Model Trailair Flex Air is Needed to Replace Lippert 1621 pin box?
Question:
I have a question about a replacement pin box for my 5th wheel. I have a TrailAir RotaFlex 18k gvw and I'd like to upgrade to their Flex Air setup. What model will I need? Thanks
asked by: Tom J
Expert Reply:
The replacement you would need is the Trailair Flex Air - 18,000 lbs, # LC328492, which is the correct replacement for Lippert 1621 pin box. Your TrailAir Rota-Flex, # LC328330, replaced Lippert 1621 and 1621HD pin boxes which we know because there was not a Rota-Flex available to replace Lippert 0719 pin boxes.
You will find the instructions linked at the bottom, as well as a video of a manufacturer's demo.
Products Referenced in This Question
Trailair Rota-Flex 5th Wheel Pin Box - Lippert 1621 or 1621HD - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- Lippert 1621HD
- Lippert
more information >
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: How To Determine Which Pin Box I Have and What Replacements Are Available
- Q&A: How to Determine the Pin Box Manufacturer and Model on a 5th Wheel Trailer
- Q&A: Comparing Rota-Flex and Gen-Y 5th Wheel Pin Boxes
- Q&A: Why Would Flex Air Pin Box Cause Trailer to Sit Nose High
- Q&A: Replacement Pin Box Options For a 2022 Keystone Cougar 316RLS 5TH Wheel Camper
- Q&A: Comparison Between Trailair Flex Air and Gen-Y Executive Replacement Pin Boxes
- Q&A: What Flexair 5th Wheel Pin Box Fits My 2021 Grand Design Reflection 337RLS?
- Article: Parts Needed to Add Hydraulic Disc Brakes to a Trailer
- Article: Adapters for Towing a 5th Wheel Trailer with a Gooseneck Hitch
- Article: Sidewinder with Rotating Turret for Short Bed Pickups
- Article: Fifth Airborne Replacement Trailer King Pin with Air Cushions by Fifth Gear
- Article: Best 5th Wheel to Gooseneck Adapters (2023)
- Article: Fifth Wheel Trailer Hitch Information and Installation Tips