This is a A-1931019 Ring Set, Piston, Std. (1 Cyl) PN: 1931019Main Description As Following : A-1931019 Ring Set, Piston; Std. (1 Cyl) P.N: 1931019 Top Ring Width: .118" / 3 MMTop Ring Type: Keystone Wedge2nd Ring Width: .098" / 2.5 MM2nd Ring Type: Taper Face W/ Reverse Internal Step3rd Ring Width: .157" / 4 MM3rd Ring Type: Oil Control Ring W/ Coil Spring Found in Section & Models : Engine Parts > Engine Related Parts, Ford / New Holland TRACTOR: 6635 (2/96-12/98), Ford / New Holland TRACTOR: 7635 (2/96-12/98), Engine Parts > 8045.25 Diesel, Case-IH TRACTOR: JX100U (SN 776979> W/ Emissionised Engine), Case-IH TRACTOR: JX90U (SN 776979> W/ Emissionised Engine), Ford / New Holland TRACTOR: TL100 (SN 776979> W/ Emissionised Engine), Ford / New Holland TRACTOR: TL90 (SN 776979> W/ Emissionised Engine) Associated Items : A-1931021 Also This is An Aftermarket Product And : Top Ring Width: .118" / 3 MM Top Ring Type: Keystone Wedge 2nd Ring Width: .098" / 2.5 MM 2nd Ring Type: Taper Face W/ Reverse Internal Step 3rd Ring Width: .157" / 4 MM 3rd Ring Type: Oil Control Ring W/ Coil Spring