This MotoRad Radiator Cap Adapter fits your 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 GMC C1500 Suburban 4.1L 5.0L 5.7L 6.2L 6.5L 7.4L L6 V8 and is perfect for a tune up or performance upgrade. .
