GSC Power-Division Viton Valve Stem Seals - STI 2004-2016 / WRX 2002-2014 / More
GSC Power Division
GSC Power-Division Viton Valve Stem Seals for the Subaru Turbo EJ Motors 6mm seal set (includes 8 intake and 8 Exhaust). These are an upgrade from the standard OEM material to help cope with the higher heat caused increasing the performance of your engine.
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