Upgrade or replace with confidence using this Aftermarket oil sump gasket. Compatible with models including 6466D, 7710, 7810, 8100T, 8110T, 8120, 8200T, 8210T, 8220, 8300T, 8310T, 8320, 8400, 8400T, 8410T, 8420, 8520, 8570, 9100. Interchangeable with OEM John Deere part number(s): R521228, RE504822. Designed to fit John Deere equipment and built for long-lasting performance.