Valves, Exhaust Manifold, 1964-78 Chevrolet SB

Exhaust Manifold Heat Riser Valve Assembly, 1964-78 Chevrolet Small Block

Reproduction - Complete Replacement Valve — Restores Exhaust Heat-Riser Operation

This exhaust manifold heat riser valve assembly replaces a rusted, seized or missing original on applicable 1964-78 Chevrolet small-block applications. The valve helps direct exhaust heat during cold operation so the engine and intake system warm more quickly, then opens as temperature rises to avoid unnecessary exhaust restriction. Supplied as a complete assembly.

• Reproduction of the original OEM/GM component • Exhaust manifold heat riser valve assembly • Replaces rusted, seized or missing original • Supports faster cold-engine warm-up • Helps prevent restriction caused by a stuck-closed valve • Complete assembly