Replace Lippert 1621 HD with Curt Air Ride 5th Wheel Pin Box for Lippert 1621 HD
Updated 07/02/2021 | Published 06/29/2021 >
Products Featured in This Question
Question:
Trailair LC328492. I currently have a 1621HD listed at 18K installed on my 2018 Highland Ridge 350H toy hauler and want to make sure I purchase the correct component. Also, what is the difference on the long jaw and medium jaw and what do I need.
asked by: Joseph S
Expert Reply:
The Curt Flex Air 5th Wheel Pin Box - Lippert 1621, # LC328492, and other Curt Flex Air 5th Wheel Pin Boxes are designed to be direct replacements to your current pin box. The long jaw models, medium jaw descriptors you refer to simply identify the type of pin box it is designed to replace.
If you currently have the 1621 HD installed then I suggest the Curt Air Ride 5th Wheel Pin Box, # LC158778 that designed to replace Lippert 1621 and 1621HD long-jaw 5th-wheel pin boxes. The length (from outside edge of mounting plate to center of king pin) is 28-11/16".
Please note the attached product review and installation videos.
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs
- Air Ride Suspension
- Fixed Turret
- Lippert 1621
- CURT
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Fifth Wheel Hitch
- Q&A: How to Mount Curt Q20 5th Wheel Hitch for Base Rails in 2017 Ford F-350 With Puck System
- Search Results: curt q20 parts
- Search Results: 5th wheel pin box
- Search Results: order returns
- Search Results: returns information
- Search Results: return~police
- Shop: Adapter Rails for Curt 5th Wheel Hitch - Ford and Chevy/GMC Towing Prep Package
- Shop: Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- Search Results: lippert 1621 5th wheel pin box
- Q&A: Adapter Part Needed for Curt A20 Slider to Fit 2022 Ford F-350 with OEM Puck Package
- Q&A: How to Install a Curt A20 Slider in a Ford Factory Puck System
- Q&A: What 5th Wheel Hitches Are Curt 16027 Puck/Rail Adapter Compatible With
- Video: Curt 5th Wheel Hitch Adapter Rails Installation - 2022 Ford F-250 Super Duty
- Shop: Trailair Air Ride 5th Wheel Pin Box - Lippert 0719 - 18,000 lbs
- Shop: B&W Companion OEM 5th Wheel Trailer Hitch w/ Slider for Ram Towing Prep Package - Dual Jaw - 20K
- Shop: B&W Companion OEM 5th Wheel Trailer Hitch w Slider for Ford Towing Prep Package - Dual Jaw - 20K
- Shop: B&W Patriot 5th Wheel Trailer Hitch w/ Slider for Ford Super Duty - Dual Jaw - 18,000 lbs
- Q&A: Bolt Torque Value for Installing LC1387882 Lippert 1621 HD Replacement Pin Box
- Q&A: Difference Between Lippert 1621 Pin Box And 1621SHD Pin Box
- Q&A: Dimensions Of Holes On Lippert 1621 5th Wheel Pin Box
- Video: Lippert 1621 5th Wheel Pin Box Review
- Video: The Low-Down on the Curt Rota-Flex 5th Wheel Pin Box
- Shop: Curt OEM 5th-Wheel Hitch Legs for Ford Super Duty Towing Prep Package - 24,000 lbs
- Video: B and W Companion Slider Gooseneck-to-5th-Wheel Trailer Hitch Adapter Installation - 2019 Ford F-250
- Video: Best Fifth Wheel Hitch Picks - 2025 Ford F-350 Super Duty
- Shop: Brake Controller
- Video: In-Depth Review of the Trailair Air Ride 5th Wheel Pin Box
- Shop: Suspension Enhancement
- Shop: Vehicle Tow Bar Brake System



