Recommended Sidewinder Pin Box to Replace Leland 7921 Pin Box on 16,000 lbs GVWR 5th Wheel

Question:

I have a 5th wheel 2003 sunnybrook 28 ft. It has a Leland engineering pin box. On AF 7921. Am wondering which if any sidewinder would fit it. It is 16000 gvwr

asked by: Dean L

Expert Reply:

To replace your Leland 7921 pin box, we have the Reese Sidewinder Fifth Wheel King Pin with Rotating Turret by 5th Airborne, 16K # ST400-5AS16K which will move your king pin turning point back 22 inches to allow turning clearance. This will decrease vertical shock by up to 44 percent and longitudinal shock by nearly 60 percent.

expert reply by: Jason S

Michelle

4/20/2024

How much does this cost? Can you buy just the turett and replace it with the turett on part 61431?

Jon G.

5/16/2024

@Michelle A lot of the Sidewinder pin boxes have been discontinued, like the one mentioned above. For now, the only option is to use the 5th Airborne Premium 5th Wheel Air Ride King Pin with Sidewinder # 5AS16K and find a turret that matches your pin box bolt pattern. I wasn't able to find anything with the part 61431 but if that is confirmed to fit this pin box then you can use it.