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Supertech black nitrided exhaust valves for BMW M50/M52/S50/S52 are offered as a set of eight in +1mm oversize. The listing specifies a black nitrided finish and the oversize dimension, indicating these valves are intended for use where valve seat or guide reconditioning requires larger valve sizes. They are packaged as a full set for the listed BMW engine families and provide a nitrided surface treatment with the specified oversize dimension for rebuild applications.
Supertech BMW M50/M52/S50/S52 Black Nitrided Exhaust Valve - +1mm Oversize - Set of 8
