Description
1964-78 Small Block Exhaust Manifold Heat Riser Valve
The heat riser valve is located between the exhaust manifold and the head pipe and is used to hasten the warm-up of a cold engine. Malfunctioning or frozen valves can cause loss of power or exhaust manifold damage.
Also Fits:
Camaro: 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975
Chevelle: 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972
GM Truck: 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978
Impala: 1968, 1969, 1970
Nova: 1968, 1969, 1970