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GSC Power Division manganese bronze intake/exhaust valve guide for Porsche GT3 Cup 996/997 applications, offered as a single unit with a +0.003" oversize outer diameter. This replacement guide provides a robust manganese bronze surface for valve operation and is intended for direct-fit installation in compatible cylinder heads during service.
GSC P-D Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide Standard Style +.003in OD - Single
