The AEM 30-4110 Wideband O2 UEGO Gauge is essential for optimizing engine performance and preventing damage, combining precision and durability. As a trusted AEM product, it delivers reliable accuracy for tuning and daily monitoring.
A direct replacement for AEM part numbers 30-4110, 304110, 30-4100, 304100, 37301001, 30-0300, 300300, it's ideal for EFI, carbureted engines, and dynamometers. Unlike narrow band sensors, it provides consistent AFR data to avoid power loss or engine damage.
Equipped with a Bosch 4.9 LSU sensor and weld-in bung, it offers faster light-off and lower current draw than older 4.2 LSU models—no free air calibration needed. The 52mm (2-1/16") housing fits most gauge pods and can be remotely mounted for versatility.
Multi-fuel compatible (E85, Ethanol, Methanol) with 0-5V analog output (10-20 AFR) for data loggers/engine management. The LED display and color-changing "needle" enable easy AFR monitoring at a glance.
The complete kit includes all installation accessories and interchangeable bezels/faceplates for customizing your setup. Professional installation is recommended (no manual included). Check compatibility before purchase; contact us for support.