GSC Power-Division Exhaust Valve Guides OEM Style 2002-2014 WRX / 2004-2021 STI YMM_2022_Ascent these plugs are engineered for

these plugs are engineered for higher horsepower applications requiring better heat dissipation

Detailed installation instructions

featuring components that work together to optimize rear suspension performance

Finish: Shot-blasted matte texture on upper mounts

GSC Power-Division Exhaust Valve Guides OEM Style 2002-2014 WRX / 2004-2021 STI YMM_2022_Ascent these plugs are engineered forUpgrade your Subaru WRX or WRX STI with GSC Power Division Exhaust Valve Guides, designed specifically for 2002 2014 WRX and 2004 2021 Subaru WRX STI models. These premium valve guides improve airflow and fit precisely, making installation faster and more reliable than OEM style replacements. Perfect for enthusiasts seeking durable, high quality engine components that enhance performance and longevity. Crafted from true C67410 Manganese Bronze, these