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The GSC Power Division manganese bronze intake/exhaust valve guide is a single 2.525in long guide with .3415in ID and .502in OD and a +.003in oversize OD. Supplied as an individual replacement, it provides a catalog-specified oversize option for restoring proper fit where guide bores have worn, enabling targeted repairs without replacing all guides.
GSC P-D SBC Manganese Bronze Int/Exh Valve Guide 2.525in L x .3415in ID x .502in OD +.003in - Single
