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AEM Wideband AFR & Boost Failsafe Gauge

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.

This gauge is a must have for all tuned performance engines, either forced induction or naturally aspirated, fuel injected or carbureted. Any high performance vehicle owners who want a highly accurate AFR tuning tool with logging and a protection strategy that can save an engine from catastrophic failure will want this Failsafe device.


  • AEMnet compatible
  • Standard 52mm gauge size
  • Data analysis using AEMdata software
  • Interchangeable faceplates and bezels
  • No free air calibration required-ever
  • Bosch Wideband UEGO sensor and weld-in bung included
  • Intuitive set up software (PC based with USB connectivity)
  • On-Board 3+ hour Datalogging capability at 20hz per parameter
AEM Instruction Manual.


    AEM Wideband AFR & Boost Failsafe Gauge

    Regular price Sale $320.98 Sale price MSRP $356.64
    Free Shipping
    Free standard shipping applies to this item within the continental United States. Orders shipped to Alaska, Hawaii, Virgin Islands, Canada, Puerto Rico, Guam, and PO/APO/FPO boxes are subject to additional shipping charges.
    Ships: 1-5 business days
    This is an estimated ship date once your order is placed from JHPUSA. Ship dates do not include weekends and holidays.
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