This is a A-1930922 Ring Set, Piston, Std. (1 Cyl) PN: 1930922Main Description As Following : A-1930922 Ring Set, Piston; Std. (1 Cyl) P.N: 1930922 Top Ring Width: .118" / 3 MMTop Ring Type: Keystone Wedge2nd Ring Width: .098" / 2.5 MM2nd Ring Type: Taper Face3rd Ring Width: .157" / 4 MM3rd Ring Type: Oil Control Ring W/ Coil Spring Found in Section & Models : Engine Parts > Engine Related Parts, Fiat TRACTOR: 88-93DT (SN D3378>), Ford / New Holland TRACTOR: 7635 (2/96-12/98), Engine Parts > 8045.25 Diesel, Case-IH TRACTOR: JX90U (SN <776978), Fiat TRACTOR: 88-94DT (SN D3378>), Ford / New Holland TRACTOR: TL90 (SN <776978), Ford / New Holland TRACTOR: 6635 Associated Items : A-1930919 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 3rd Ring Width: .157" / 4 MM 3rd Ring Type: Oil Control Ring W/ Coil Spring