Haltech Wideband O2 Sensor for Bosch LSU 4.2

Haltech Wideband O2 Sensor for Bosch LSU 4.2 Accurate, fast-response air/fuel measurement — the Haltech Wideband O2 Sensor for Bosch LSU 4.2 delivers precision lambda readings for tuning, data logging, and engine protection. Designed to integrate seamlessly with Haltech ECU systems and most aftermarket wideband controllers using the LSU 4.2 platform. Compatible: Bosch LSU 4.2 standard — ideal for performance and aftermarket applications Fast response: Quick lambda updates for transient conditions and closed-loop control Durable construction: Built to withstand exhaust temperatures and vibration common in high-performance engines Accurate calibration: Factory-spec output for reliable tuning and AFR mapping Easy installation: Threaded sensor housing fits standard O2 bung locations This sensor is perfect for tuners, racers, and OEM-style installations where precise wideband measurements are required. Pair with Haltech ECUs, wideband controllers, or data loggers to optimize fuel delivery, protect against lean conditions, and improve performance. Specifications: Bosch LSU 4.2 element, OE-style thread and heater, calibrated for wideband air/fuel ratio control.