For 1979-1995 GMC G2500 Radiator Cap API 43126BZ 1980 1981 1982 1983 1984 1985

For 1991 GMC Syclone Radiator Cap API 85818QP 4.3L V6

For 1991 GMC Syclone Radiator Cap Adapter 64967BSXK 4.3L V6 Standard

For 1991 GMC Syclone Radiator Cap Adapter 38643KZDF 4.3L V6 Standard

For 1991 GMC Syclone Radiator Cap Gates 19314FVQJ 4.3L V6 GAS

For 1991 GMC Syclone Radiator Cap Gates 41536DFDQ 4.3L V6 GAS

For 1991 GMC Syclone Radiator Cap 78149TQYM 4.3L V6

For 1991 GMC Syclone Radiator Cap 77899JSXR 4.3L V6