Bosch Lamda Sensor 4.9

Description

Bosch LSU 4.9 Wideband Lambda Sensor
​The Bosch LSU 4.9 is a premium wideband oxygen sensor designed for precision air-fuel ratio (AFR) monitoring. Unlike standard narrowband sensors, the LSU 4.9 provides a linear signal, allowing for accurate measurements across a broad range of mixtures—from extremely rich to lean. It is the industry standard for high-performance tuning, motorsport applications, and modern diesel/gasoline engine management.
​Key Features
​Broad Range Measurement: Capable of measuring Lambda from 0.65 to infinity, making it ideal for tuning both lean-burn and high-boost rich conditions.
​Dual Cell Design: Utilizes a planar ZrO_2 dual cell limiting current sensor with an integrated heater for rapid activation and stable readings.
​High Temperature Resistance: Designed to withstand continuous exhaust gas temperatures up to 930°C (and up to 1,030°C for short bursts).
​Robust & Precise: Features a factory-calibrated trimming resistor within the connector to ensure plug-and-play accuracy without manual free-air calibration in many systems.
​Universal Compatibility: Works seamlessly with aftermarket ECUs (like FuelTech, Haltech, MoTeC, and Emtron) and dedicated AFR controllers.