MotoRad Radiator Cap Adapter for 1987-1989 GMC R2500 4.3L 4.8L 5.0L 5.7L nv

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

Gates Radiator Cap Tester Adapter for 1988-1999 Chevrolet C1500 4.3L 5.0L sk

Gates Radiator Cap Tester Adapter for 1996-2002 GMC Savana 2500 4.3L 5.0L sd

Gates Radiator Cap Tester Adapter for 1989 Chevrolet R2500 5.7L 6.2L 7.4L V8 zm

MotoRad Radiator Cap Adapter for 1970-2005 GMC Jimmy 4.1L 4.3L 4.8L 5.0L sv

MotoRad Radiator Cap Adapter for 1979-2000 GMC K2500 4.1L 4.3L 4.8L 5.0L kv

MotoRad Radiator Cap Adapter for 1979-1999 GMC K1500 4.1L 4.3L 4.8L 5.0L ge