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GSC Power Division manganese bronze exhaust valve guide for Nissan TB48DE engines, supplied as a single unit with +.001in oversize OD. The oversize specification is intended to correct valve-to-guide clearance during head servicing. This replacement guide is used to restore proper valve alignment and consistent exhaust valve operation where the original guide is worn or requires an oversize fit.
GSC P-D Nissan TB48DE Manganese Bronze Exhaust Valve Guide +.001in Oversize OD - Single
