GSC Power-Division Viton Valve Stem Seals for the Evo 8 & 9 include the entire 5.5mm valve size seal set (8 intake and 8 Exhaust)so you will have no guess-work when it comes to installation. These stem seals are an upgrade from the standard OEM material to help cope with the higher heat caused by high performance 4G63 engines.
- Full set includes 8 intake and 8 exhaust stem seals
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