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Supertech triple‑groove valve locks for 6mm stems are supplied as a set of 12 and require two locks per valve. These hardened locks fit engines from Audi, BMW, and Opel that use 6mm valve stems, providing the retention interface between valve stem and keeper. The set format supports multi‑valve service and rebuilds where exact keeper count and stem size are specified.
Supertech Audi/BMW/Opel 6mm Stem Triple Groove Valve Lock - Set of 12 (Req 2 Per Valve)
