AEM 30-0300 X-Series Wideband UEGO AFR Sensor Controller Gauge

Features patented X-Digital wideband technology (Patent 9,575,030), Kit includes Bosch 4.9LSU wideband UEGO sensor, The factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires, It is compatible with vehicle/system voltages up to 16V, Has a 52mm gauge diameter and...

AEM 30-4110 Digital Wideband UEGO Gauge with Bosch LSU 4.9 sensor

AEM’s legendary Digital Wideband O2 AFR UEGO Gauge is a wideband UEGO air/fuel ratio controller (AFR) and gauge in one. It unites accuracy, speed, and control with an easy to read, digital LED display and sweeping LED “needle” that changes colors as AFR changes from rich to lean. NOTE: The...