Bosch LSU 4.2 Wideband O2 Sensor

Bosch LSU 4.2 Wideband O2 Sensor

- Provides precise air-fuel ratio measurement for tuning and ECU management

- Fast response time for accurate readings under all driving conditions

- Durable design for long service life, even under high exhaust temperatures

- Compatible with a wide range of standalone ECUs (including K-DATA kdFi V1.4, Megasquirt, and others)

- Direct-fit wiring connector for easy installation

The Bosch LSU 4.2 wideband lambda sensor is the industry standard for accurate air-fuel ratio monitoring, used by tuners and ECU manufacturers worldwide. Its fast response and wide measurement range ensure precise engine management, improving performance, efficiency, and reliability on both naturally aspirated and forced induction engines.

Built with OEM-level durability, the LSU 4.2 is designed to withstand the harsh conditions of high-performance exhaust systems. It is compatible with most standalone ECUs and wideband controllers, making it an essential upgrade for tuning applications.