Product#: 3887023

1964-78 Chevrolet, GMC Exhaust Manifold Heat Riser Valve; Small Block; Car & Truck

Reproduction exhaust manifold heat riser valve for various 1964-78 General Motors passenger cars and truck models as listed below. The heat riser valve is located between the exhaust manifold and the head pipe and is used to...

Product#: EMR001

1957-72 V8 Exhaust Manifold Heat Riser With 2" Headpipe And Valve

Stock replacement heat riser valves are available as well as "blank" plates for improved flow. Note: Images are shown from the bottom (pipe) side.

Product#: EMR002

1959-1974 V8 Exhaust Manifold Heat Riser With 2-1/2" Headpipe SB Hi-Perf, 348/409 Hi-perf, all BB

Heat riser valves are located between the exhaust manifold and the head pipe and are used to accelerate the warm up of a cold engine. A malfunctioning or frozen valve can cause loss of power or exhaust manifold damage. Fits...