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The Spectre high-performance replacement panel air filter for 2016–2018 Subaru WRX/STI 2.5L H4 is a direct-fit HPR element that increases airflow over ordinary paper filters to aid horsepower and acceleration. Reinforced with steel mesh and manufactured using quality synthetic media and urethane sealing, this factory pre-oiled filter is ready to install and helps maintain proper airbox sealing while improving engine breathing.
Spectre 16-18 Subaru STI 2.5L H4 F/I Replacement Panel Air Filter
