AEMBosch LSU 4.9 Replacement O2 Sensor AEM’s Bosch 4.9LSU Wideband UEGO O2 replacement sensor kit includes only the sensor (with attached cable and male connector) and is intended to replace an existing mounted wideband sensor used with AEM Digital Wideband UEGO Air/Fuel Controller Part Number 30-4110. These 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. The wideband 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. Features Accurate to 0.1 AFR Never requires free-air calibration when used with an AEM Controller and connector plug Specifically designed for use with AEM Wideband UEGO controller Part Number 30-4110 Replacement sensor only Applications Compatible with the following Wideband Controllers 30-4110 – Digital Wideband UEGO Gauge 30-0300 – X-Series Digital Wideband UEGO AFR Gauge 30-0310 – X-Series Inline Wideband UEGO AFR Controller What’s In The Box? (1)AEM Bosch LSU 4.9 Wideband Sensor Warranty Manufacturer Standard Warranty