This is a A-104496C2 Pressure Plate PN: 104496C2Main Description As Following : A-104496C2 Pressure Plate P.N: 104496C2 Spline Count: 17Spline Diameter: 1.75" Found in Section & Models : Clutch Parts > Single Clutch, Case-IH TRACTOR: 3688, Case-IH TRACTOR: 3688HC, Case-IH TRACTOR: 986 Associated Items : New Also A-IH-O-3088, A-IH-P-ENG56CYL, A-IH-P-3088, A-IH-S-ENG3400, A-IH-S-3088, A-IH-O-BATTIGN, A-IH-O-786-1586, A-IH-P-ENG56CYL, A-IH-P-786-1486, A-IH-S-AIRHEAT, A-IH-S-ENG3400, A-IH-S-TOOLSLATE, A-IH-S-TUNELATE, A-IH-S-786ETC, A-MW-P-IH986, A-SMIH203 And : Spline Count: 17 Spline Diameter: 1.75"