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The GSC Power Division +1mm intake valve for Subaru FA20F WRX (2015+) is a chrome-polished, oversize intake valve specified with a 35mm head and listed as a single unit. This replacement valve is intended for valvetrain service or engine rebuild tasks where a +1mm intake valve is required; the polished finish and stated head diameter are provided to match engine assembly and inspection needs.
GSC P-D Subaru FA20F WRX 2015+ 21-4N Chrome Polished Exhaust Valve 35mm Head +1mm - (1)
