This is a A-388616R91 Pressure Plate: 11", (w/ 1.437" flywheel step) PN: 388616R91Main Description As Following : A-388616R91 Pressure Plate: 11", (w/ 1.437" flywheel step) P.N: 388616R91 Spline Count: 16Spline Diameter: 1.687" Replaces: 388616-R IH , Crossed From: WN-388616R91 , , WN388616R91 , , 388616HD , , 388616K , Found in Section & Models : Tractor Parts Associated Items : New Also This is An Aftermarket Product And : Spline Count: 16 Spline Diameter: 1.687"