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GSC Power Division Viton valve stem seal set for Mitsubishi 4G63T engines (Evo I–IX / 1990–1998 DSM). These 6.6mm Viton seals are supplied as a set to replace worn stem seals and help control oil consumption and valve‑guide leakage. They are intended for direct replacement during routine top‑end service or head rebuilds on compatible 4G63T applications.
GSC P-D 4G63T Evo 1-9 / 90-98 DSM Viton 6.6mm Valve Stem Seal Set
