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GSC Power Division manganese bronze intake/exhaust valve guide for Porsche GT3 Cup 996/997 applications, supplied individually with a +0.001" oversize outer diameter. The guide is a single replacement unit designed to provide a durable bearing surface for valve operation in compatible GT3 Cup heads and supports selective cylinder head maintenance.
GSC P-D Porsche GT3 Cup 996/997 Intake/Exhaust Valve Guide Standard Style +.001in OD - Single
