AEM Bosch LSU 4.9 UEGO Replacement Sensor
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AEM Bosch LSU 4.9 UEGO Replacement Sensor - Universal
AEM is a well known name in aftermarket engine management and wideband air/fuel monitoring, and this replacement sensor keeps your existing AEM wideband controller running at factory accuracy. It's a direct replacement part for any universal application already running an AEM UEGO wideband setup, giving you lab-grade AFR readings without buying a whole new controller.
This listing covers the Bosch LSU 4.9 sensor only, supplied with its attached cable and male connector, for use with AEM wideband UEGO air/fuel controllers. It replaces a worn or failed sensor on an existing AEM wideband install and is not a complete controller kit.
Important: the connector body has a laser-etched, factory-calibrated resistor matched specifically to this sensor. Do not modify or swap connectors between sensors, as this will invalidate the calibration and skew your AFR readings.
Specifications
- Sensor type: Bosch LSU 4.9 wideband UEGO O2
- Accuracy: within 0.1 AFR, factory laboratory calibrated
- No free-air calibration required when used with an AEM wideband controller
- Includes sensor with attached cable and male connector only
- Calibrated resistor built into connector body, specific to this sensor
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your existing AEM wideband controller model before ordering to ensure compatibility.
Not sure if this sensor suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
Universal fitment — verify dimensions before ordering.
Technical Specifications
| Spec | Value |
|---|---|
| Sensor Type | Bosch LSU 4.9 Wideband UEGO O2 Sensor |
| Accuracy | 0.1 AFR |
| Calibration | Laboratory-calibrated at Bosch factory; laser-etched calibrated resistor unique to each sensor |
| Free-Air Calibration Required | No, when used with AEM wideband AFR controller |
| Included Components | Sensor with attached cable and male connector |
No instructions available for this product.

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