What Curt Air Ride Pin Box Will Replace The LCI Part Number 20210182651
Updated 01/19/2026 | Published 08/09/2024
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Question:
Will the Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 be the correct replacement for LCI part number 20210182651. Pin box is on a 2023 Cruiser Aire 28RD.
asked by: Mark
0
LCI Pin Box Sticker
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(click to enlarge)
Expert Reply:
Hello Mark. I had Lippert run the serial number for your pin box and yours is actually the Lippert 1621 bolt pattern. The Trailair Air Ride 5th Wheel Pin Box # LC155943 you mentioned is for the Lippert 1116 bolt pattern so this will not be correct. The correct Curt shock absorbing pin box is the following:
- Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs # LC328492
expert reply by:
Jesse M
0
Product Page this Question was Asked From
Trailair Air Ride 5th Wheel Pin Box - Lippert 1116 - 21,000 lbs
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 21000 lbs
- Air Ride Suspension
- Fixed Turret
- Lippert 1116
- Lippert
more information >
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on 5th Wheel Pin Box
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Jesse M.
1/19/2026
Hey Mark, how did the Curt Flex Air pin box work out with your Cruiser Aire? Your update could make it easier for the next person trying to match the right bolt pattern.