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

M5146

SPRING PIN MACK

This is a spring pin, also known as a shackle pin or spring hanger pin, designed for Mack truck suspension systems. It serves as the pivot point for the leaf spring assembly, connecting the spring to the shackle or frame hanger. Over time, these pins and their bushings wear, leading to play, misalignment, and uneven tire wear, which requires replacement to restore proper axle alignment and ride quality.