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The GSC Power Division manganese bronze intake/exhaust valve guide is a single replacement with 2.1in length, .3415in ID and .502in OD and a +.001in oversize. Offered individually, it lets technicians or home mechanics address worn guide bore conditions by installing a catalog-matched oversize guide to restore proper valve stem fit and maintain correct valve-to-guide clearance.
GSC P-D SBC Manganese Bronze Int/Exh Valve Guide 2.1in L x .3415in ID x .502in OD (+.001in) - Single
