AEM's Bosch 4.2LSU Wideband UEGO O2 replacement sensor kit includes only the sensor, with attached cable and male connector, and is intended to replace an existing mounted wideband sensor used with AEM wideband air/fuel UEGO controllers. Each sensor has a laser-etched, calibrated resistor in the connector body, factory-calibrated at Bosch to 0.1 AFR accuracy, and never requires free-air calibration when used with an AEM wideband controller.
Specifications:
- Sensor: Bosch 4.2 LSU
- Accuracy: 0.1 AFR
- Calibration: laser-etched resistor, no free-air calibration needed
- Includes: connector and pins
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 30-2001
This product carries a California Proposition 65 warning per the manufacturer's data.
FAQ
Which AEM controllers use the 30-2001 replacement sensor?
It replaces the sensor on AEM's Infinity EMS, 30-4100 gauge, 30-4900 gauge, 30-2310, 30-2340, 30-2340-N, 30-5130, 30-5143, and 30-2320 controllers.
Does the sensor need free-air calibration?
No. Each sensor has a laser-etched, calibrated resistor in the connector body and is factory-calibrated at Bosch to 0.1 AFR accuracy.
What is included with the kit?
The sensor, attached cable, and male connector only; no controller or bung is included.

