Gates Radiator Cap Tester Adapter for 1975-1978 GMC G35 4.8L 4.1L L6 5.7L bu

Gates Radiator Cap Tester Adapter for 1975-1978 GMC G25 4.1L 4.8L 5.0L 5.7L ky

Gates Radiator Cap for 1978 GMC G25 4.1L 4.8L 5.0L 5.7L 6.6L L6 V8 nj

Gates Radiator Cap Tester Adapter for 1975-1978 GMC C15 Suburban 4.1L L6 fs

Gates Radiator Cap Tester Adapter for 1975-1978 GMC K15 Suburban 4.1L L6 ef

Gates Radiator Cap Tester Adapter for 1975-1978 GMC C15 4.1L 4.8L 5.0L 5.7L wy

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

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