Oxygen Sensor for monitoring exhaust oxygen levels to optimize engine performance and minimize emissions. - What it does: measures the oxygen content in the exhaust and sends a signal to the vehicle computer to adjust the air-fuel ratio. - Key benefits: improves fuel economy through accurate fuel trimming; enhances idle stability and throttle response; enables reliable OBD fault codes and diagnostics; built to endure high-temperature exhaust environments. - Compatibility: designed for standard 4-wire oxygen sensors and common mounting interfaces; suitable for most gasoline engines with OBD systems. Check vehicle compatibility, thread size, and connector type before installation. - Size and material: robust stainless steel body with a ceramic sensing element; sealed electrical connections; designed for typical O2 sensor mounting locations. - Performance: fast response to changing exhaust composition; stable readings over time; long service life under normal operating conditions. - Use scenarios: 1) Replacing a worn sensor on a passenger car to restore proper fuel trim and emissions readiness. 2) Verifying sensor readings after installing a performance exhaust or aftermarket cat to ensure correct air-fuel balance. 3) Diagnosing engine performance issues or during routine emissions testing to confirm sensor health.