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GSC Power Division manganese bronze exhaust valve guide for BMW 335i (E92) inline‑6, +0.003in oversize OD, single. This replacement guide follows the oversize specification to restore valve stem fit when the original bore has been reamed. Made from manganese bronze, the guide supplies a precise bore for the exhaust valve stem and is intended as a direct service replacement matching the listed oversize dimension.
GSC P-D BMW 335i E92 L6 Manganese Bronze Exhaust Valve Guide +.003in OD - Single
