Clutch release bearing assy: all models with single 9" and 10" clutch, 1939 thru 1964. Single 11" clutch w/ trans. PTO 3600 with 6 speed: 2600, 3600 w/ 8 speed or less PTO, 1975 & up. Grease type: also replaces 787580A. ID-2.0625", OD-3.5625", W-0.7969." C0NN7580A$23.07 Davis Tractor Parts Ford 8N Dept 24263 Antioch Rd. Andalusia, AL 36421 Phone: 334-222-7214 Fax: 334-222-0025 Email: parts@davistractor.com