This is a A-26794570 Bearing, PTO Release PN: 26794570Main Description As Following : A-26794570 Bearing, PTO Release P.N: 26794570 Dim A (1): 2.559" I.D.Dim B (2): 3.937" O.D.Dim C (3): .433" WIDE Stocked As: A-1442381X1 Found in Section & Models : Clutch Parts > Double Clutch, Fiat TRACTOR: 446, Fiat TRACTOR: 446DT, Fiat TRACTOR: 450, Fiat TRACTOR: 450DT, Fiat TRACTOR: 466, Fiat TRACTOR: 466DT, Fiat TRACTOR: 480, Fiat TRACTOR: 480DT, Fiat TRACTOR: 500, Fiat TRACTOR: 500DT, Fiat TRACTOR: 540, Fiat TRACTOR: 540DT, Fiat TRACTOR: 550, Fiat TRACTOR: 566, Fiat TRACTOR: 566DT, Fiat TRACTOR: 580, Fiat TRACTOR: 580DT, Fiat TRACTOR: 600, Fiat TRACTOR: 640, Fiat TRACTOR: 666 Associated Items : New Also A-FI-S-466566, A-FI-P-566566DT, A-FI-S-466566, A-FI-P-566566DT, A-FI-S-466566, A-FI-S-466566, A-FI-S-780, A-FI-S-780, A-LO-P-350, A-LO-S-360 And : Dim A (1): 2.559" I.D. Dim B (2): 3.937" O.D. Dim C (3): .433" WIDE