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GSC manganese bronze standard‑style exhaust valve guide for Porsche 996 and 997 Turbo models is offered as a single replacement by GSC Power Division. Suited to turbocharged Porsche cylinder head service, the STD style guide restores exhaust valve stem guidance and running clearance during maintenance. Supplied individually to support selective repairs and accurate refitting in head rebuilds.
GSC P-D Porsche 996/997 Turbo Manganese Bronze STD Style Exhaust Valve Guide - Single
