Bosch Wideband Sensors

Genuine Bosch Wideband Lambda Sensors

A reliable, accurate wideband O₂ sensor is critical for any high-performance build, especially when using aftermarket engine management. These are genuine Bosch lambda sensors — the industry standard for precise air-fuel ratio measurement and rock-solid feedback control.
 
Fully compatible with MaxxECU, Link ECU, and virtually all major aftermarket controllers that support Bosch LSU-type sensors.
 
Why Choose Genuine Bosch Sensors?
OEM-grade accuracy and response time.
Long-life sensing elements designed for harsh motorsport environments.
Correct calibration for aftermarket ECUs (no guessing or cheap clones).
Direct replacement for existing LSU-type installations.
 
Available Versions:
Bosch LSU 4.2 — PN 0258007057
Super durable wideband sensor, these wont let you down! Commonly used on MaxxECU harnesses. 
Bosch LSU 4.9 — PN 0258017025
The most commonly used sensor in modern aftermarket ECUs. Faster response and higher accuracy.
Bosch LSU 5.2 — PN 0258037022
The newest generation. Optimized for high-precision AFR control and supported by advanced ECUs like MaxxECU GEN2.