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Determining Which Reese Goose Box Fits A 2018 Jayco Eagle 321 RSTS


Can you help me with correct Reese Goose Box Part number for my Lippert trailer frame. I have a 2018 Jayco 321RSTS. thanks


Expert Reply:

I would be happy to help you find the correct Reese Goose Box for your 2018 Jayco Eagle 321 RSTS but unfortunately we do not have a break down of the specific components your trailer uses so we will need to identify which pin box your trailer has.

Check your pin box for a white sticker with a four digit number like 1716 or 1116. If you cannot find such a sticker just send me a picture of the sticker on the pin box that has the serial number and I can use that to identify it.

For an example if your trailer uses the 1621 or 0719 pin box then you will need the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter - Lippert 1621 and 0719 - 20,000 lbs # RP94720.

If you can provide the above information we can make sure you get the correct Reese Goosebox.

I went ahead and included a video of the # RP94720 for you to take a look at.

expert reply by:
Samuel C

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