When your John Deere starts burning oil or you notice blue smoke on startup, worn valve seals are often the culprit. This inlet valve seal keeps engine oil where it belongs—lubricating your engine instead of burning in the combustion chamber. A small part that makes a big difference in keeping your tractor running clean and efficient. What You're Getting Precise fit for John Deere 4239T and 6359T engines found in these tractors Quality seal material that handles engine heat and oil without hardening Proper dimensions to maintain compression and prevent oil consumption Direct replacement seal that installs with standard valve work procedures Built for Real Farm Work This seal fits the workhorses of many farm operations—John Deere 40, 50, and 55 series tractors that handle everything from field work to loader duty. Whether your 2650 is pulling implements, your 4050 is doing heavy tillage, or your 2755 runs the loader daily, these engines depend on proper valve sealing to maintain power and efficiency. Made to Last Engine valve seals live in a tough environment with constant heat cycles and oil exposure. This seal uses compounds specifically designed for the operating temperatures and pressures found in these John Deere engines. It maintains flexibility and sealing properties through thousands of valve cycles. Good to Know Valve seal replacement typically requires cylinder head work, so it's often done during valve jobs or head rebuilds. If you're noticing oil consumption but still have good compression, worn valve seals might be the issue rather than rings. This is especially common on higher-hour tractors where the seals have seen years of heat cycling.