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Replace Lippert 1621 HD with Trailair Air Ride 5th Wheel Pin Box for Lippert 1621 HD


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.


Expert Reply:

The Trailair Flex Air 5th Wheel Pin Box - Lippert 1621, # LC328492, and other Trailair 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 Trailair 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.

expert reply by:
Michael R

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