AEM Wideband Failsafe Gauge

SKU: AEM-30-4900

Manufacturer: AEM

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AEM Wideband Failsafe Gauge

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The Wideband FAILSAFE Gauge is a Universal Exhaust Gas Oxygen (UEGO—“you-way-go”) controller with an internal boost sensor, an internal data logger and a full color Organic Light Emitting Diode (OLED) display. It includes technology to activate a failsafe strategy in the event AFR falls outside of a user-defined operating window. If the AFR falls outside of the set operating window, the Wideband FAILSAFE Gauge triggers a user defined output function that can save an engine from catastrophic damage.


  • Kit comes with 6 different faceplates and black and silver bezels. 
  • Black and White AFR in sweeping LEDs 
  • Black and White Vacuum/Boost in sweeping LEDs 
  • Black Vacuum only in sweeping LEDs 
  • Black Lambda in sweeping LEDs 


  • Displays both boost or vacuum and AFR or Lambda simultaneously on the same gauge 
  • No free air calibration required – ever 
  • 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 
  • Interchangeable faceplates and bezels (see options, above) 
  • Data analysis using AEMdata software 


  • AEMnet compatible (CAN 2.0) 
  • Differential AFR analog output 
  • Differential boost analog output 
  • Configurable RPM input for logging 
  • One low-side driver output (Ground with 1.5 amp max draw) 
  • Positive-lock connectors 
  • Tunable PC-based software with USB connectivity 
  • Time based reset for outputs

Manufacturer AEM
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