1964-78 GM; Exhaust Manifold Heat Riser Valve; Small Block
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...
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1958-74 Chevrolet V8 Big Block; Exhaust Manifold Heat Riser With 2-1/2" Headpipe Without Valve
Replacement heat riser "blank" plate for improved flow. Note: Images are shown from the bottom (pipe) side.
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1957-79 V8 Small Block Exhaust Manifold Heat Riser, Without Valve
Stock replacement heat riser valves are available as well as "blank" plates for improved flow. {specs} Note: Images are shown from the bottom (pipe) side.