This is a A-618237R91 Bearing, Release (sealed) PN: 618237R91Main Description As Following : A-618237R91 Bearing, Release (sealed) P.N: 618237R91 Inside Diameter: 2.250"Outside Diameter: 3.805"Thickness: .810" Stocked As: A-N1082 Found in Section & Models : Clutch Parts > Single Clutch, Case-IH TRACTOR: M, Case-IH TRACTOR: MD, Case-IH TRACTOR: MDV, Case-IH TRACTOR: MV, Case-IH TRACTOR: SUPER M, Case-IH TRACTOR: SUPER MD, Case-IH TRACTOR: SUPER W6, Case-IH TRACTOR: WD6, Case-IH TRACTOR: W6, Case-IH TRACTOR: 440, Case-IH TRACTOR: 441, Case-IH TRACTOR: 480, Case-IH TRACTOR: 531, Case-IH TRACTOR: 540 SERIES, Case-IH TRACTOR: 541, Case-IH TRACTOR: 634, Case-IH TRACTOR: 640 Associated Items : New Also A-FRM-IHOL, A-IH-C-DOMGENCAT, A-IH-C-HMMD, A-IH-C-MUSCLES, A-IH-C-1936FULL, A-IH-O-HLDRBLD, A-IH-O-HMATTCH, A-IH-O-HYDRLIFT, A-IH-O-MMV, A-IH-O-MMV45, A-IH-O-MMV47, A-IH-O-MMV52, A-IH-O-M1939, A-IH-O-M1949, A-IH-O-STANDLITES, A-IH-O-TRACATCH, A-IH-OP-M1940, A-IH-P-ABHMIM, A-IH-P-ACCESSORY, A-IH-P-HAYMAHNS And : Inside Diameter: 2.250" Outside Diameter: 3.805" Thickness: .810"