AEM Wideband UEGO Bosch 4.9 LSU sensor (universal)

These sensors have a laser-etched, calibrated resistor in the sensor's connector body.
This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output.

The wideband sensor is laboratory-calibrated at the Bosch factory, accurate to 0.1 AFR and never requires free-air calibration when used with an AEM wideband AFR controller.

Direct Replacement Sensor for the 30-4110 Digital Wideband UEGO Gauge

-Highly accurate down to 0.1 Air Fuel Ratio
-Wont ever require free air calibration with used with an AEM controller & connector plug
-Designed specifically for use with AEM 30-4110 Wideband UEGO Controller
-Replacement Sensor ONLY

If you have a different AEM Wideband Controller please refer to the 30-2001 Bosch LSU 4.2 Replacement Sensor.

Please note: from 10-2023 AEM will supply FAE O2 sensors with their Wideband kits. As long as there is still stock of the Bosch 4.9 sensors at AEM or us, we will supply these to you. After that you will receive an FAE sensor.