Reese Goose Box that Fits 2020 Grand Design Reflection 337RLS
Updated 02/03/2026 | Published 07/27/2024
Question:
Hello Etrailer, I’m looking for the correct part number for a Reese Goose Neck conversion. My 2020 Grand Design Reflection 337RLS has the Lippert pin box, this pic is of my current pin box.
asked by: Harold B
0
Pin Box Sticker
(click to enlarge)
(click to enlarge)
Expert Reply:
Hey Harold, from previous customers who have your same 2020 Grand Design Reflection 337RLS we have determined that the style of pin box you have is the Lippert 1621 so for a Goose Box you would want the part # RP94716 that you referenced.
expert reply by:
Jameson C
0
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Jameson C.
2/3/2026
Hey Harold, how did the Goose Box work out with your Reflection’s Lippert 1621 pin box? Knowing how the fit turned out could help others looking at the same setup.