I want to replace my 2021 Grand Design 5th wheel pin box with a Gen-Y Gooseneck
Updated 05/01/2026 | Published 04/29/2026
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Question:
which Gen-x gooseneck will fit my 2021 Grand Design 5th wheel. Im changing from 5th wheel to gooseneck .. s/n s004974372 lci item 722705 rpo -0004413587
asked by: Pamela K
Expert Reply:
Great information Pamela, that made it really easy.
The LCI number 722705 corresponds to a Lippert 1621 pin box. I see you were interested in the Gen-Y Nomad with 30k GTW and 6.5K TW, # GY57ND has those same specs and it's designed to replace a 1621 pin box.
Safety chains are required, so if you don't have those Gen-Y # GY49GR are specifically designed to work with Gen-Y Hitch fifth wheel to gooseneck pin boxes.
How will you use the open bed space once you make the switch?
Product Page this Question was Asked From
Gen-Y Hitch Nomad 5th Wheel to Gooseneck Pin Box - 1621,1116, 1716 - 30K GTW - 6.5K TW
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 30000 lbs
- Replaces Pin Box
- Not Shock Absorbing
- Lippert 1116
- Lippert 1716
- Lippert 1621
- Gen-Y Hitch
more information >
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