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The Supertech Viton exhaust valve stem seals are sized for 6mm valve stems and supplied as a set of 12 for BMW applications. Identified in the product description by stem size and material, this twelve‑piece set is intended for replacing worn exhaust seals across a multi‑valve head during engine service, offering matched seals for a complete cylinder bank refresh.
Supertech BMW 6mm Stem Viton Exhaust Valve Stem Seal - Set of 12
