This bushing is the sliding guide for the front axle assembly. It fits into the axle pivot housing and allows the axle to articulate as the tractor moves over uneven ground. A worn bushing introduces play in the pivot joint, which leads to steering wander and accelerated wear on the kingpins and seals. As an original component from the tractor manufacturer, the bushing is machined to the same clearance as the pivot pin, so no shimming or reaming is required during installation.