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The GSC Power Division manganese bronze standard-style valve guide set is a 12-piece kit for Porsche 992 GT3 and CUP intake and exhaust valves. Supplied as a full set of twelve, these guides replace worn guide components during head service, restoring valve alignment and clearance in 992 GT3/CUP cylinder heads and supporting proper valvetrain operation after rebuilds.
GSC P-D Porsche 992 GT3/CUP Manganese Bronze Intake/Exhaust Standard Style Valve Guide - Set of 12
