John Deere tractors are among the most widely used farm machines in the world, which makes John Deere-compatible filters a steady replacement part. This page groups oil, fuel, air, hydraulic and cab filters for John Deere 6D, 6E, 6M and 6R series tractors and for PowerTech engines. Common references include John Deere RE504836 (engine oil filter for the 6D, 6E, 6M and 6R series), RE541922 (primary fuel filter), RE522868 and RE526557 (final fuel filters), and AL172780 and AL150288 (primary and secondary air filters for the 6D Tier 3). Part numbers vary by model, serial number range and emission level, so send the tractor model and serial number or the old filter number and we will confirm the match. OEM/ODM service is available. ADAOER Filter.