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AEM’s wideband O2 UEGO AFR replacement sensor and stainless-steel, finned, stand-off bung kit includes only a replacement Bosch 4.2 LSU Wideband UEGO sensor and stainless steel tall manifold bung. It is designed for installation and use with the AEM 4-Channel Wideband UEGO Controller, and forced induction (turbo and supercharged) applications.
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.

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 controllers
  • Includes sensor and weld-on stainless-steel tall manifold bung

This part is shipped via the Supplier, meaning that once the order is placed we forward the order directly to our supplier. Our supplier then ships the part directly to you.

We can not guarantee the stock count from initial order placed, however can provide a stock amount prior to an order placed. Please note, stock counts are subject to change.

Orders may be dispatched in Partial Shipments. Multiple parts in one order may be shipped from different suppliers within Australia.



AEM sets the performance aftermarket standard by providing racers and car enthusiasts all over the world with innovative performance car electronics that are engineered to outperform.

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