Bosch LSU 4.2 Wideband O2 Sensor

The Bosch LSU 4.2 Wideband O2 sensor is a crucial component for monitoring and optimizing engine performance, delivering accurate measurements of your engine's air-fuel ratio in real-time, determining the lambda value. The Bosch LSU 4.2 WB-O2 sensor is compatible with unleaded gasoline, ethanol gasoline blends, methanol, and diesel. However, the sensor's lifespan is significantly reduced when used with leaded fuel, diesel, or in 2-stroke engines.  Thread Size:The Bosch LSU 4.2 sensor has a thread size of M18 x 1.51. Installation and Calibration:To operate the sensor effectively, you’ll need to pair it with a wideband O2 signal conditioner (also referred to as a wideband O2 controller). When paired with a FuelTech wideband O2 controller, the sensor is automatically calibrated.  The Bosch part number for this sensor is 0 258 007 057 (VW Number: 021-906-262-B)2. Additional Information:If you’re looking for a compact solution, consider the WB-O2 Nano. It features an extended reading scale