Genuine Bosch LSU 4.9 Wideband O2 AFR Sensor. Replacement sensor for LSU 4.9 wideband controllers such as AEM, Innovate, Spartan and many more. Sensors can become damaged due to impacts or extreme operating conditions. This genuine Bosch wideband sensor is the best replacement sensor available, guaranteeing optimum, accurate performance.
The Bosch LSU 4.9 sensors have a laser-etched, calibrated resistor in the sensor?s connector body. This wideband sensor is laboratory-calibrated at the Bosch factory to be accurate to 0.1 AFR. Compatible with both controllers that require free-air calibration such as the Innovate LC2, and those that do not, such as AEM X-Series widebands. The attached plug and play connector plugs directly into all aftermarket wideband controllers.
Warranty
There is no warranty implied or offered on Wideband sensors. LSu 4.9 sensors are extremely sensitive to vibration and especially to cold shock from cold start tunes. For best results, put the controller on a separate power feed and turn on after the engine has been warmed up. The ME442 or other ecu with built in wideband controller can ensure the sensor does not start heating until the engine is up to temperature. Additionally, if left with the controller powered on with the ignition on the sensor will self heat, a rich cold start can and will cold shock the element.