Determining Which Reese Goose Box Fits A 2018 Jayco Eagle 321 RSTS
Published 06/04/2021 >
Question:
Can you help me with correct Reese Goose Box Part number for my Lippert trailer frame. I have a 2018 Jayco 321RSTS. thanks
asked by: Kirk E
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 # RP85FR.
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 # RP85FR for you to take a look at.

Product Page this Question was Asked From
Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter - 20,000 lbs
- 5th Wheel Gooseneck Adapter
- Adapts Trailer
- 5th Wheel Trailer to Gooseneck Hitch
- No Extra Clearance
- 20000 lbs GTW
- Replaces Pin Box
- Shock Absorbing
- Fabex 600
- Lippert 0719
- Lippert 1621
- Lippert 1716
- Lippert Rhino
- Reese
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Q&A: How To Determine Which Pin Box I Have and What Replacements Are Available
- Q&A: What is the Difference in the 3rd Generation Reese Goosebox?
- Q&A: What 5th Wheel to Gooseneck Adapter Hitch do I Need for My 2019 Ford F250 with Short Bed?
- Q&A: Is An Offset Ball Needed For The Reese Goosebox In A Short Bed 2014 Ram 3500 Dually
- Q&A: Which One is Better the Gen-Y Offset Gooseneck Ball for Ford Puck Systems or the Curt?
- Q&A: Options for Towing A Fifth Wheel With A 2022 F-350 Short Bed With OEM Puck System
- Q&A: Does the Shocker 5th Wheel to Gooseneck & Demco Lock Coupler Have Offset?