Mazda6 Rear Oxygen Sensor LFN7-18-8G1 Universal Quality Check Engine Light Fix

This rear oxygen sensor is designed for 2002-2008 Mazda6 (2.0L/2.3L); matches original interface; resolves engine fault light, high fuel consumption, and emissions issues caused by sensor failure. OEM number LFN7-18-8G1 (corresponds to LFN7-18 series). Quick cross-check in stock; replacement medium difficulty; use dedicated socket; clean exhaust manifold threads and apply anti-seize to avoid seizing. As a universal quality part, this product has been bench-tested and is suitable for fleet buy for cost savings; also compatible with Mazda3 and CX-7 of similar era.