ECUMaster Wideband 4.2 Oxygen Sensor Kit With Terminals, allows you to use the on-board wideband oxygen sensor controller in the ECUMaster EMU. Accurate information is vital to engine performance and tuning, and the Bosch LSU 4.2 wideband oxygen sensor is a reliable and accurate sensor.

What’s in the box?
Bosch LSU 4.2 Oxygen Sensor
Mating connector with terminals

This sensor will work with the ECUMaster EMU, EMU Classic, or EMU Black.

The EMU Black can instead run a newer 4.9 sensor, we offer that item HERE