Gates Radiator Cap Tester Adapter for 1975-1978 GMC K25 5.7L 5.0L 7.4L 6.6L yc

Gates Radiator Cap Tester Adapter for 1975-1978 GMC C15 5.7L 5.0L 7.4L 6.6L ro

Gates Radiator Cap Tester Adapter for 1975-1978 GMC C25 5.7L 5.0L 7.4L 6.6L hj

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

Gates Radiator Cap Tester Adapter for 1975-1978 GMC C25 Suburban 5.7L 5.0L fj

Gates Radiator Cap Tester Adapter for 1975-1978 GMC K25 Suburban 5.7L 5.0L yw

Gates Radiator Cap for 1988-1999 Chevrolet C1500 4.3L 5.0L 5.7L 6.2L 7.4L V6 dd

Gates Radiator Cap Tester Adapter for 1975-1978 GMC C35 4.1L 4.8L 5.0L 5.7L wz