LSU 4.9 5-Wire Wideband Oxygen Sensor

The Bosch 0258017025 is a 5-wire LSU 4.9 wideband oxygen sensor engineered for monitoring exhaust oxygen levels and optimizing air-fuel ratios. This sensor is crucial for engine management, providing data to the ECU to adjust fuel mixtures, thereby enhancing combustion efficiency and potentially improving fuel economy. It is compatible with a wide range of fuels, including E85, gasoline, diesel, and methanol/alcohol. Featuring a lambda range of 0.65 to 1.36 and an 18mm x 1.50 thread size, the LSU 4.9 sensor is built for accuracy and durability. Its advanced planar design and integrated heater contribute to faster response times, improved stability, and a longer service life. This is a universal fitment sensor and may require some adaptation depending on the specific application. The sensor has an overall wire length of 1000mm (approximately 39.3 inches). It's important to note that this sensor is not intended to replace a specific OE sensor directly and may not function correctly with all ECUs without additional modifications or a compatible LSU-IC controller.