Upgrade your Subaru’s engine management with the AEM UEGO Replacement Wideband O2 Sensor Bosch LSU 4.2. This premium sensor kit is designed to deliver highly accurate air/fuel ratio (AFR) readings, essential for tuning and monitoring performance. Perfect for Subaru WRX STI, BRZ, and other models, it ensures your wideband UEGO controller gets reliable data for optimal engine operation.

Each sensor features a laser-etched, calibrated resistor matched to the individual unit, guaranteeing precision within 0.1 AFR. Factory-calibrated by Bosch, it requires no free-air calibration when used with AEM wideband AFR controllers. The kit includes the sensor with an attached cable and male connector, compatible with a range of AEM controllers including Infinity Engine Management Systems and various wideband gauges and controllers.

Ideal for Subaru enthusiasts focused on engine management and tuning, this sensor replacement ensures consistent performance and accuracy. Trust Subimods for quality Subaru parts and upgrade your setup today with this reliable Bosch LSU 4.2 sensor.