Description
When your 4020 starts burning oil, losing power, or just plain sounds tired after all those seasons of hard work, you know it’s time for more than a patch job. This complete engine overhaul kit gets your trusted John Deere back to running like it did when it first rolled off the lot, with everything you need for a proper rebuild from top to bottom.
What You’re Getting
- Complete cylinder sleeves and seals – no boring required, just install and go
- Matched piston and ring sets with keystone top compression rings for better sealing
- Full valve train kit including intake and exhaust valves, springs, guides, and retainers
- Complete gasket set covers every seal point from head to oil pan
- Connecting rod bolts, pin bushings, and all the small parts that add up fast
Built for Real Farm Work
This kit fits the classic John Deere 4020 tractors that built America’s farms – machines that handle serious acreage and keep working year after year. Whether you’re using your 4020 for plowing, planting, or running the big implements that need serious horsepower, this 404 cubic inch diesel was built to work hard and with this kit, it’ll keep doing it for years to come.
Made to Last
The 6-cylinder 404 CID engine in your 4020 is a proven design that’s earned its reputation for reliability. This kit uses the same keystone top compression ring design that came from the factory, which means better oil control and longer ring life. The 4-1/4 inch standard bore sleeves eliminate the need for machine work – just clean up the block and install.
Good to Know
This is a complete rebuild kit minus the main and rod bearings, which need to be measured and ordered separately based on your crankshaft’s condition. If you haven’t done an overhaul before, consider having the machine work done professionally – proper torque specs and assembly procedures are critical for a long-lasting rebuild. Clean everything thoroughly during assembly, and use fresh oil and filters once you fire it up.
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