Oil seal, PTO, tractors: all models with 1-1/8" & 1-3/8" PTO (1939 thru 1964); 2000, 3000, 4,6,7&8 speed trans., 3550, 4000, (1965 to 1975); 2600, 3600, 4100, 4600, (1975 to 1981); 2610, 3610, 4110 4610, (1981 to -). Replaces 9N703B, D8NN703AA, D9NN703BA. O.D. 2.45", I.D. 1-5/8", W. 5/8". D9NN703BB$2.73 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com