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These Brian Crower 31.5mm exhaust valves are specified for Mitsubishi 4G63 engines used in Eclipse and Evo models. Produced to match the listed diameter, the valves are intended as direct replacements for the engine’s exhaust valve set and provide a specific 31.5mm sizing for builders and rebuilders working on 4G63 cylinder heads.
Brian Crower Mitsubishi 4G63 Eclipse/Evo 31.5mm Exhaust Valves
