Gates Radiator Cap Tester Adapter for 1987-1991 GMC V3500 4.8L 5.7L 6.2L ds

Gates Radiator Cap Tester Adapter for 1987-1988 Chevrolet V30 4.8L 5.7L 6.2L hj

Gates Radiator Cap Tester Adapter for 1987 Chevrolet V20 4.8L 5.7L 6.2L L6 gc

MotoRad Radiator Cap Adapter for 1987-1988 Chevrolet R30 4.8L 5.7L 6.2L 7.4L tm

Gates Radiator Cap Tester Adapter for 1979-1989 GMC P2500 4.8L 5.7L 6.2L L6 qe

Gates Radiator Cap Tester Adapter for 1987-1991 GMC R3500 4.8L 5.7L 6.2L ji

Gates Radiator Cap Tester Adapter for 1989-1991 Chevrolet R3500 5.7L 6.2L hf

Gates Radiator Cap Tester Adapter for 1987 GMC V2500 4.8L 5.7L 6.2L L6 V8 - ci