Compatible with Ford B-Series (Bus) B-600 1980-1990, B-700, B-800 1980-1998;. Compatible with Ford L-Series (Heavy duty tractor truck) F-9000 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990. It features 7/16 barbed fittings and 1/4 NPT port, requires a radiator cap in up to 16 Lb.