Determining Which Reese Goose Box Fits 2020 Keystone Montana High Country 305RL and 345RL

Published 06/07/2021

Question:

Here are the pictures of both trailers pin box serial numbers

asked by: James M

Expert Reply:

I would love to help, but you will need to confirm which pin boxes are currently on your 2020 Keystone Montana High Country 305RL and 345RL to see if one of the Reese Goose Boxes will fit as we do not have a way to determine which pin box was installed on your trailer.

To do this you will need to check each pin box for the model number, this is typically a 4 digit number like 1621. If this model number sticker is missing then just send me a picture of the tag that has the serial number and I would be happy to identify it for you.

The available Reese Goose Boxes are as follows:

# RP94716-61301 which replaces the Lippert 1716 Pin Box and has a 20000lb trailer weight rating

# RP85FR which replaces the Lippert 1621 and 0719 Pin Boxes and has a 20000lb trailer weight rating.

I included a video review of the Reese Goose Box for you to take a look at.

expert reply by: Samuel C

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James M.

6/7/2021

Here are the pictures of both trailers pin box serial numbers

Samuel C.

6/7/2021

Thanks for the pictures! I reached out to my contact at Lippert and both of your trailers use the same 1116 pin box with a 19000lb rating. The only Reese Goose Box that fits this is the Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter # RP94716-61301 but this model only has a 16000lb rating so it would be underrated for your trailers. Instead I recommend the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box - Lippert 1116/1716 - Manual Latch - 21K # GY43FR which has a 21000lb trailer weight rating and a 3500lb pin weight rating. This will work perfectly on both trailers and allow you to connect both trailer to the gooseneck hitch in your truck. I included a video of the # GY43FR for you to take a look at.