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The GSC intake valve guide for Porsche 996 and 997 Turbo engines is a standard-style manganese bronze replacement sold individually with a +.003in oversize outer diameter. It provides direct-fit valve guidance to preserve valve stem alignment and dependable operation after head machining or repair. This larger oversize option helps achieve correct interference in bores that need a bigger guide for a secure fit.
GSC P-D Porsche 996/997 Turbo Intake Valve Guide Standard Style +.003in Oversize OD - Single
