Description
When your engine starts knocking on startup or sounds rough at idle, worn connecting rod bushings are often the culprit. This connecting rod bushing is what provides the smooth bearing surface between your connecting rod and the wrist pin, transferring power from your pistons to the crankshaft. When bushings wear out, you’ll hear that telltale metallic knocking – especially when the engine’s cold or under load.
What You’re Getting
- Unfinished bushing that requires machine shop installation and final sizing – just like the pros do
- Compatible with multiple John Deere engine families including 4239T, 4039T, 6359T, 4045T, and 6068T
- Heavy-duty construction designed to handle the constant stress of combustion forces
- Quality bronze or steel alloy material that provides proper oil retention and heat dissipation
- Direct replacement for worn original bushings in your connecting rods
Built for Real Farm Work
These engines power a wide range of John Deere tractors from utility models like the 2650 and 2750 up through heavy-duty field tractors like the 7600 and 7500. Whether you’re running a 3400 on a dairy operation, pulling implements with a 4050, or operating loader equipment with a 6400, these bushings handle the demanding loads that farm work puts on engines day after day.
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 for reliable lubrication. The material composition provides the right balance of strength and wear resistance.
Installation Notes
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 – connecting rod work demands precision equipment and experience. Your machine shop will press out the old bushing, install this new one, and bore it to the exact clearance your engine needs.
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