How to Determine Correct Goose Box on a 2003 Thor Wanderer Toy Hauler

Updated 04/19/2018 | Published 04/18/2018

Question:

I have a 2003 Thor Wanderer 32 foot self contained toy hauler. How do I figure out what pin box I have or know which Goose Box I need. The trailer is 16k rated. Will the Goose Box help or hurt the ride of the trailer vs the 5th wheel hitch? Im tired of taking the 5th wheel hitch in and out of the truck, and since I got the new truck with a Curt hide-a-ball gooseneck hitch, I have to use the Curt 5th wheel adapter that adds another 60 or 70 pounds to the 5th wheel hitch.

asked by: Jeramy J

Expert Reply:

I've linked a video that shows the measurements on popular pin boxes. If you can't determine the model of your current pin box you can measure the bolt hold dimensions to figure out what it is.

However, the easiest way is to find a sticker or plate on the pin box somewhere that has the model number. If you find a sticker that has a serial number let me know what that is and I may be able to cross reference it to determine the model number. We usually can.

There are 2 models of Goose Box that are rated for 20,000 pounds; # RP85FR which replaces a Lippert 1621 pin box and # RP94716-61301 which replaces the Lippert 1716. Both are very popular models.

The Goose Boxes are air ride couplers with both an air bag and shock absorbers. They're designed to reduce road shock to improve your overall ride and improve handling while you're towing.

expert reply by: Charles S