The GSC intake valve guide for BMW 335i E92 L6 engines is a manganese bronze replacement supplied individually with a +.001in oversize outer diameter. It acts as a direct-fit intake guide to preserve valve stem alignment and dependable operation in rebuilt or serviced heads. The small oversize supports exact seating when guide bores have been refitted or lightly machined for replacement.
GSC P-D BMW 335i E92 L6 Manganese Bronze Intake Valve Guide +.001in OD - Single