How To Determine What Gen-Y Gooseneck Pin Box Fits A 2009 Keystone Fuzion 302 Toy Hauler
Updated 02/02/2026 | Published 12/30/2025
Question:
I have a 2009 Keystone Fuzion 302 Fifth Wheel toy hauler, that I would like to install a Gen-Y shock absorbing gooseneck adapter to. Which one do I need?
asked by: Alex W
Expert Reply:
Hello Alex, thanks for reaching out. We should have the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box you need, but unfortunately there is no way to confirm exactly which one you need using only the make and model of camper. RV manufacturers just are not that specific with their online literature.
The main thing we need to nail down, is which bolt pattern the current pin box uses. There should be a sticker or tag on the current pin box that shows stuff like the model number and serial number. This tag may show the bolt pattern, but in most cases we can use the model and serial number to look that up.
For example, the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box # GY38FR you were looking at replaces the Lippert 1621 pin box which is very common. This will be the correct model based on your GVWR, we just need to make sure the current pin box is indeed the 1621.
Let me know what you find, or even email me a picture of the pin box sticker and I am happy to look into it.
(click to enlarge)
Product Page this Question was Asked From
Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1621/1621HD - 30K GTW - 4.5K TW
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 30000 lbs
- Replaces Pin Box
- Shock Absorbing
- Lippert 1621
- Lippert 1621HD
- Gen-Y Hitch
more information >
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Jesse M.
1/27/2026
Hey Alex, were you able to confirm which pin box your Fuzion 302 uses? Once you have that model or serial number, we can be sure the Gen-Y shock absorbing gooseneck adapter is the right fit. Let me know what you find—I’m happy to help narrow it down.