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The Supertech valve stem seal for GM/Opel applications is a 5.0mm Viton integral seal supplied as a set of eight. Offered to replace worn seals, the Viton material and integral design are specified in the description, providing the required seal diameter for compatible GM/Opel valvetrain applications where this size is called out.
Supertech GM/Opel 5.0mm Viton Integral Valve Stem Seal - Set of 8
