Measuring to Find the Correct 5th Airborne Pin Box for a Keystone Fusion 403  

Question:

Expert Reply:

I have seen these longer pin box numbers before and there is no information available for these pin boxes yet. If you cannot find a 4 digit pin box number on the trailer you will need to contact Lippert or Keystone to see which pin box you have. If it is not one of the numbers listed below then the only way to select the correct 5th Airborne Premium Fifth Wheel Air Ride Coupler is by measuring and using those dimensions to make a selection. I have sent a separate email on how to measure your existing pin box so you can let me know what the dimensions are and I can find the correct part for you.

Basically, you need to measure the pin box width and the distance between the horizontal center line of the attachment holes and the vertical center line of the attachment holes. You will also need to measure from the center of the king pin to the center of the front and rear row of bolt holes. Let me know the dimensions you get and I will find the correct part for your setup.

Lippert Pin Box Part Numbers, 0719, 1116, 0115, 1621, 1621HD, 1716 and 0516.

expert reply by: Robert G

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