Fits: APN6600B, 8N6608 Ford Tractor 9N, 2N, 8N SN: 247571 and up. Includes: (2) 3/4" wide gears (check your gear width before ordering) See JJFD384 if your gears are 9/16" wide Main drive gear with shaft Bushing (must be honed to size) See JJFD5680 for repair tools Gasket.