The John Deere T28284 is an OEM (Original Equipment Manufacturer) circular plain shim, essential for maintaining proper spacing and reducing wear in various John Deere machinery components. This genuine part ensures precise fitment and reliable performance, contributing to the longevity and efficient operation of your equipment. With an outer diameter of 38.1 mm, an inner diameter of 25.4 mm, and a thickness of 0.127 mm, it meets exact specifications for a wide range of John Deere tractors, combines, and other agricultural machines.