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GSC Power Division manganese bronze intake and exhaust valve guide set for BMW M3 E46 S54 engines, supplied as a set of 12. These guides are intended for S54 cylinder heads to replace worn guides and provide the manganese bronze material option for both intake and exhaust positions during head servicing or rebuilds.
GSC P-D BMW M3 E46 S54 Manganese Bronze Intake/Exhaust Valve Guide - Set of 12
