Subaru WRX Emission Control Parts

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    An oxygen sensor (also known as an O2 sensor or Lambda sensor) is a sensor designed to generate a reading based on the content of oxygen in an automotive exhaust system. The sensor itself is made of a ceramic compound with porous-shaped electrodes coated in platinum, surrounded by a protective metal shell casing. O2 sensor casings are threaded, and the entire unit...
    Subaru WRX was available in the following models:
    Impreza • WRX • WRX STI and submodels: WRX • WRX STI • WRX Limited • WRX TR • WRX STI Limited • WRX Premium • WRX STI Special Edition • Base • Limited • SE • STI • Premium • Sport-tech • Tsurugi Edition • Launch Edition