O2 Sensor

Wideband oxygen sensor for the Rush SR exhaust system, measures air/fuel ratio across the full operating range from rich to lean. This sensor feeds data to the ECU and dash display, allowing real-time AFR monitoring for tuning and engine health diagnosis.

The Rush SR uses the Suzuki GSX-S 1000 engine which runs a closed-loop fuel injection system. The wideband O2 sensor provides continuous AFR feedback so the ECU can maintain optimal combustion efficiency across all throttle positions and RPM ranges. The dash can display AFR in real-time, which is invaluable when making fuel map adjustments or diagnosing lean/rich conditions.

Mounts in the exhaust collector with an M18x1.5 bung. O2 sensors are wear items that degrade over time from heat and contaminants—replace if you're getting inconsistent AFR readings or if the sensor is over 100 hours of operation. The sensor must be positioned at least 18 inches downstream from the exhaust ports for accurate readings.