This is a A-A64956 Clutch - York/Tecumseh Style ( 2 groove 7" pulley) (X dim = 1.66", Y dim = .62") PN: A64956Main Description As Following : A-A64956 Clutch - York/Tecumseh Style ( 2 groove 7" pulley) (X dim = 1.66", Y dim = .62") P.N: A64956 Pulley Diameter: 7"Pulley Grooves: 2X: 1.66"Y: .62" Stocked As: A-600-281 Found in Section & Models : Air Conditioning Parts > Clutch, Case-IH TRACTOR: 870 Associated Items : New Also A-CA-O-770870, A-CA-P-870, A-CA-S-770870, A-SMC203 And : Pulley Diameter: 7" Pulley Grooves: 2 X: 1.66" Y: .62"