The GSC Power Division manganese-bronze intake and exhaust valve guide set for Porsche GT3 Cup 996/997 is a standard (STD) style valve guide kit supplied as a set of 12. Specified for the 996/997 GT3 Cup applications, this set provides the standard-style guides in manganese bronze for use where those factory-style valve guides are required.
GSC P-D Porsche GT3 CUP 996/997 Manganese Bronze STD Style Intake/Exhaust Valve Guide - SET OF 12