This is a A-139018C3 Plate, Backing, Shift Clutch PN: 139018C3Main Description As Following : A-139018C3 Plate, Backing, Shift Clutch P.N: 139018C3 Inside Diameter: 4.060"Outside Diameter: 7.970"Thickness: .390" Found in Section & Models : Transmission & Rear Axle > Clutch Plates: Clutch and PTO, Case-IH TRACTOR: 5088, Case-IH TRACTOR: 5288, Case-IH TRACTOR: 5488 Associated Items : New Also A-IH-O-BATTIGN, A-IH-O-5088, A-IH-P-ENG56CYL, A-IH-P-5088, A-IH-S-AIRHEAT, A-IH-S-ENG3400, A-IH-S-TUNELATE, A-IH-S-5088, A-IH-O-BATTIGN, A-IH-O-5088, A-IH-P-ENG56CYL, A-IH-P-5088, A-IH-S-AIRHEAT, A-IH-S-ENG3400, A-IH-S-TUNELATE, A-IH-S-5088, A-IH-O-BATTIGN, A-IH-O-5088, A-IH-P-ENG56CYL, A-IH-P-5088 And : Inside Diameter: 4.060" Outside Diameter: 7.970" Thickness: .390"