Description

When your engine starts knocking on startup or sounds rough at idle, worn piston pin bushings are often the culprit. This little bronze or steel sleeve might not look like much, but it’s what provides the smooth bearing surface between your connecting rod and wrist pin, transferring power from your pistons to the crankshaft. When they wear out, you’ll hear that telltale metallic knocking—especially when the engine’s cold or under load.

What You’re Getting

Six bushings for complete engine rebuild—that’s what your 6-cylinder engines need
Precise dimensions that restore proper oil clearances for reliable lubrication
Material composition balanced for strength and wear resistance
Unfinished bushing requiring machine shop installation and final boring to specification

Built for Real Farm Work

These bushings fit the 404 cubic inch 6-cylinder turbocharged diesel engine and the 466 cylinder diesel engine found in John Deere tractors. Whether you’re running a utility tractor on a dairy operation or pulling heavy implements through tough ground, these engines power through thousands of hours of farm work handling the demanding loads that come with real agricultural use.

Made to Last

Engine bushings take incredible punishment—they deal with combustion pressures, heat cycles, and the constant reciprocating motion of pistons firing thousands of times per hour. This bushing is manufactured to handle those forces while maintaining proper oil clearances that keep everything running smooth and reliable for seasons to come.

Good to Know

This is an unfinished bushing that requires professional machine shop work—it’ll need to be pressed into your connecting rod and then bored to the correct diameter for your wrist pin. Don’t try to install this yourself since connecting rod work demands precision equipment and experience. Your machine shop will press out the old bushings, install these new ones, and bore them to the exact clearance your engine needs.