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

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

Gates Radiator Cap Tester Adapter for 1979-2000 GMC K3500 4.8L 5.7L 6.2L dr

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

Gates Radiator Cap Tester Adapter for 1987-1988 Chevrolet R20 4.3L 4.8L 5.0L lf

Gates Radiator Cap Tester Adapter for 1975-1980 Chevrolet P10 4.8L 5.7L L6 vf

Gates Radiator Cap Tester Adapter for 1975-1978 GMC G35 4.1L 4.8L 5.7L 6.6L ap

Gates Radiator Cap Tester Adapter for 1975-1978 GMC P25 4.8L 5.7L L6 V8 - eh