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The Supertech Viton exhaust valve stem seal for Honda LS and select Mitsubishi reduced‑diameter stems is listed at 6.6mm and supplied as a single seal. Specified as a reduced‑diameter item in the description, it supports selective stem seal replacement where that size is required during valve maintenance or targeted repairs.
Supertech Honda LS / Mitsubishi (Reduced Dia) 6.6mm Viton Exhaust Valve Stem Seal
