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

Gates Radiator Cap for 1979-2000 GMC C3500 4.1L 4.8L 5.0L 5.7L 6.2L 6.6L ui

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

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

Gates Radiator Cap Tester Adapter for 1987-1991 GMC V3500 6.2L 5.7L 7.4L V8 hw

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

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

Gates Radiator Cap Tester Adapter for 1987-1991 GMC R3500 5.7L 6.2L 7.4L V8 us