Image is for illustration purposes only. Actual part may vary.

FXA0061-4

KING PIN, MALTESE CROSS 3/8

A trailer king pin is the vertical steel pin mounted on the trailer's upper coupler assembly that locks into the tractor's fifth wheel hitch, allowing articulation between the tractor and trailer. The maltese cross design features a distinctive cross-shaped head or base that provides robust alignment and load distribution. This particular king pin is designated as 3/8, which likely indicates a key dimension such as the thickness of the mounting base plate or the height of the cross. Replacing a worn or damaged king pin is critical for safe towing and to prevent excessive fifth wheel wear.