AEM Wideband Replacement O2 Sensor - Bosch 4.2LSU (30-4100 UEGO)


Regular price $159.95
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  • Product Description

This kit includes a Bosch 4.2LSU sensor for use with any AEM Wideband UEGO Controller or Gauge originally using the 4.2LSU Sensor (including 30-4100). .

The Bosch 4.2LSU sensor, which gives AEM Wideband controllers their speed and accuracy, is laboratory calibrated at the factory and never requires free air calibration when used with an AEM controller!


  • No free air calibration required - ever
  • Accurate to 0.1 AFR