HD-OEM: 24023-54Part Number: 12-0507 UOM: 1 - EA Summary:Pinion shaft gear end nut fits 1954-1989 Big Twin models.Fitment: FL 1954-1984 FX 1954-1984 FXST 1984-1989 FLT 1979-1989 FXR 1982-1989 FLST 1986-1989 Country of Origin: Imported