AEM Electronics 30-4110 Wideband O2 Gauge Kit

The AEM Electronics 30-4110 Wideband O2 Gauge Kit delivers precise real-time air-fuel ratio monitoring for gasoline-powered engines with aftermarket engine management, turbochargers, or other performance modifications. The kit uses a 52 mm (2-1/16") gauge with a digital LED display and LED needle, paired with a Bosch LSU 4.9 wideband oxygen sensor, and offers a 0–5V analog output for ECU input and data logging. It covers an AFR display range of 10:1 to 20:1 and a Lambda range of 0.68 to 1.36, and includes the 52mm AFR gauge, Bosch LSU 4.9 sensor, sensor harness, weld bung, and installation hardware, with dash or gauge pod mounting. Designed as a new OEM replacement for engine air-fuel management, it is commonly installed during ECU tuning, forced induction upgrades, dyno testing, and engine diagnostics to provide real-time AFR data for improved fuel efficiency, engine safety, and optimal performance.