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AEM Bosch Wideband O2 Sensor


Price: From $102.00 to $131.00
Manufacturer: Innovate

Product Options

LSU Connector Type:


AEM Logo Bosch Wideband
O2 Sensor

AEM's Bosch 4.2LSU and 4.9LSU Wideband UEGO O2 replacement sensor kits includes only the sensor (with attached cable and male connector) and is intended to replace an existing mounted wideband sensor used with AEM Digital Wideband UEGO Air/Fuel Controllers

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.

AEM Bosch O2 Sensor

  • Accurate to 0.1 AFR

  • Never requires free-air calibration when used with an AEM Controller and connector plug.

  • Specifically designed for use with AEM Wideband UEGO controller

  • Replacement sensor only

Replacement 4.2LSU Sensor for the following AEM Wideband Controllers:

  • AEM Infinity Engine Management Systems
  • 30-4100 - Digital Wideband UEGO Gauge
  • 30-4900 - Wideband Failsafe Gauge
  • 30-2310 - Inline Wideband UEGO Controller
  • 30-2340 - 4-Channel Wideband UEGO Controller
  • 30-2340-N - 4-Channel Wideband UEGO Controller - Nascar
  • 30-5130 - Analog Wideband UEGO Gauge
  • 30-5143 - Analog E85 Wideband UEGO Gauge
  • 30-2320 - X-WiFi Wideband/EGT Controller
Replacement 4.9LSU Sensor for the following AEM Wideband Controllers:
  • 30-4110 - Digital Wideband UEGO Gauge
  • 30-0300 - X-Series Digital Wideband UEGO AFR Gauge
  • 30-0310 - X-Series Inline Wideband UEGO AFR Controller





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