AEM Replacement Bosch Wideband UEGO Oxygen Sensor - 4.2LSU

AEM UEGO wideband oxygen sensor is laboratory-calibrated at the Bosch factory, accurate to 0.1 AFR and never requires free-air calibration when used with an AEM wideband AFR controller. AEM UEGO Oxygen sensors have a laser-etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output.   Features Highly accurate down to 0.1 Air Fuel Ratio Wont ever require free air calibration with used with an AEM controller & connector plug Designed specifically for use with AEM wideband UEGO Controllers (excluding controller 34-4110) Replacement Sensor ONLY  Replacement sensor for the following AEM wideband controllers: AEM Infinity Engine Management Systems 30-4100 - Digital Wideband UEGO Gauge 30-4900 - Wideband Failsafe Gauge 30-2310 - Inline Wideband UEGO Controller 30-2340 - 4-Channel Wideband UEGO Controller 30-2340-N - 4-Channel Wideband UEGO Cont