AEM Wideband Gauge kit

AEM 30-4110 Wideband UEGO kit. This kit replaces the classic AEM 30-4100 kit with a new and impRoved LSU4.9 sensor with a faster light-off time and increased efficiency. The AEM wideband UEGO sensor controller accurately monitors Air/Fuel ratios (AFR) during the tuning process to prevent a lean fuel mixture, which could lead to engine damage. AEM has combined a single-channel wideband UEGO controller and gauge display into one unit, providing excellent AFR accuracy and control with an easy-to-read interface. AEM’s Gauge-Type Wideband UEGO Controller features a digital LED display and sweeping LED “needle” that changes colors as AFR changes from rich to lean. The unit’s 52mm (2-1/16”) gauge housing fits in most gauge pods and can be remotely mounted virtually anywhere.

  • Ideal AFR monitoring tool for EFI and carbureted applications, and engine dynos
  • Does not oscillate AFR reading like narrow band sensors
  • No laptop required for monitoring
  • Bosch LSU4.9sensor included
  • Accurate to 0.1 AFR
  • Reads in AFR or Lambda via a switch in back of gauge housing
  • 24 Color-coded LED display lights provide immediate reference to engine’s air/fuel ratio (AFR) or Lambda ratio
  • Integrated three-digit display reveals AFR or Lambda in real time
  • User-programmable 0-5v analog output included for use with data loggers and virtually any engine management system
  • Serial data stream included for output of AFR (RS 232)
AEM Wideband Gauge kit


  • 2 lb
  • Available
  • Ships within 1-3 days1

AEM Air Fuel Ratio/ Boost gauge

  • Displays accurate AFR, Vacuum and Boost pressure
  • CALL TO PLACE ORDER:818-633-0149
  • 100% Genuine AEM products or double your money back
  • Displays both boost or vacuum and AFR or Lambda simultaneously on the same gauge
  • Internal boost sensor
  • Bosch Wideband UEGO sensor and weld-in bung included
  • On-Board 3+ hour Datalogging capability at 20hz per parameter
  • Full color Organic Light Emitting Diode (OLED) Display in center, user selectable feature (boost/vacuum or AFR)
  • 24 three-color sweeping LEDs, user selectable feature (boost/vacuum or AFR)
  • Intuitive set up software
  • No free air calibration required- ever


  • 1 lb
  • Available
  • Delivery in 5-8 days1