Transmission oil seal (w/live/ind PTO) for Ford tractor models: Dexta , Super Dexta, (1957 to 1964); 2000, 3000, 4000, with 6,7, and 8 speed transmissions from 1965 to 1975; 2600 and 3600, with 6 and 8 speed transmission; 4100 and 4600 with 8 speed transmission (1981 to present). *(D) in diagram