Recommended Air-Cushioned 5th Wheel Replacement Pin Box for Keystone Montana


looking at replace the pen box with a flex air. Which of the models shown on your website by lippert would you suggest? Montana 5th wheel,2008,36ft,appox.12k


Expert Reply:

An aftermarket 5th wheel pin box that includes an air spring can improve your ride quality by taking some of the bumps out of your towing day. You can select a suitable cushioned pin box by noting the part number of your current pin box; usually this is found on the safety sticker on the left side of the box.

Once you know your pin box number you can use the linked page to see the available models that will bolt up in its place. For example, if you have the popular Lippert 1621 then you'll simply click on that number on the linked page to then see the options to replace it.

The Flex-Air pin box that replaces a 1621 is part # LC328492. The Trailair Air Ride 5th Wheel King Pin # UF35-946215 that you referenced fits in place of Fabex 730 and RBW 7019 pin boxes.

expert reply by:
Adam R

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