Finding The Correct Sidewinder Pin Box Replacement  

Question:

Expert Reply:

The best way to find which sidewinder pin box will fit your 2018 KZ Durando 1500 5th wheel trailer is to identify the bolt pattern of your current pin box and then you can use that pattern to find the correct replacement. Typically manufacturers will stamp or print a serial number or model number on the pin box but over time some get painted over and worn and become illegible. If this is the case for your pin box then you can follow the steps in the attached guide to determine your trailer's pin box bolt pattern.

The guide will have you take some measurements and then check the charts to find the match.

The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - Lippert 1716 - 20,000lbs # RP77FR you were looking at fits multiple bolt patterns; Lippert 0115, Lippert 1116, Lippert 1716.

The Reese Sidewinder 5th Wheel King Pin with Rotating Turret - 20,000lbs # RP34FR will fit the following bolt patterns Fabex 663, Fabex 665, Lippert 0719, Lippert 1621, Lippert 1621HD, M and M 663, M and M 665.

You should be able to replace you current pin box with either the # RP34FR or the # RP77FR since they cover a wide variety of bolt patterns. If you would like a custom fit sidewinder wedge kit to prevent the king pin from pivoting in jaws of your 5th wheel hitch then just reply back with the make and model of your hitch.

expert reply by: Kevin C

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