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

Gates Radiator Cap Tester Adapter for 1987-1991 GMC V1500 Suburban 5.7L 6.2L zd

Gates Radiator Cap Tester Adapter for 1987-1991 GMC V2500 Suburban 5.7L 6.2L hs

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

MotoRad Radiator Cap Adapter for 1987-1991 GMC R2500 Suburban 5.7L 6.2L 7.4L zv

Gates Radiator Cap Tester Adapter for 1989-1991 Chevrolet R2500 Suburban pm

Gates Radiator Cap Tester Adapter for 1987 GMC R1500 4.3L 5.0L 5.7L 6.2L V6 td

Gates Radiator Cap Tester Adapter for 1987-1991 GMC R1500 Suburban 5.0L 5.7L sw