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The GSC intake valve guide for Porsche 996 and 997 Turbo engines is a standard-style replacement supplied individually with a +.001in oversize outer diameter. Made from manganese bronze, it serves as a direct-fit intake guide to maintain valve stem alignment and reliable motion in serviced heads. The modest oversize supports precise seating when the guide bore has been slightly enlarged during repair.
GSC P-D Porsche 996/997 Turbo Intake Valve Guide Standard Style +.001in Oversize OD - Single
