Product description
Bosch LSU 4.2 Wideband UEGO Replacement Sensor, Sensor Only
AEM Bosch Replacement UEGO Sensor
Bosch LSU 4.2
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Supplier details checked 2026-09-23 · Test catalog
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Bosch LSU 4.2 Wideband UEGO Replacement Sensor, Sensor Only
AEM Bosch Replacement UEGO Sensor
Bosch LSU 4.2
High-quality sealed sensor housings are virtually impervious to automotive fluids (360-degree welded wetted area)
Never requires free-air calibration when used with an AEM Controller and connector plug.
Connector and pins included
Replacement sensor only
AEM Bosch UEGO Replacement Sensor
REPLACEMENT BOSCH LSU42 SENSOR
AEM - Sensors/Connectors
Sensors/Connectors
Bosch Replacement
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.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.Replacement Sensor for the following AEM Wideband Controllers.AEM Infinity Engine Management Systems30-4100 - Digital Wideband UEGO Gauge30-4900 - Wideband Failsafe Gauge30-2310 - Inline Wideband UEGO Controller30-2340 - 4-Channel Wideband UEGO Controller30-2340-N - 4-Channel Wideband UEGO Controller - Nascar30-5130 - Analog Wideband UEGO Gauge30-5143 - Analog E85 Wideband UEGO Gauge30-2320 - X-WiFi Wideband/EGT Controller
Bosch LSU 4.2 Wideband UEGO Replacement Sensor
Oxygen Sensor
AEMEOXYGSENS