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    Air Fuel Ratio Gauges

    If you drive a turbocharged anything, then one of the most important and often overlooked gauge is the Air Fuel Ratio Gauge. What is an Air Fuel Ratio Gauge and what is it supposed to do? For those unfamiliar with this gauge, the air-fuel ratios provided under boost tells you whether you are running lean. or rich. More importantly, it is a tool utilized by tuners they use to provide a solid tune for your car. If you are running lean under peak boost for example, and you see your gauge is running a 13:1 ratio under peak boost then you are at risk of blowing your motor. If you are running below a 1:1 Air Fuel Ratio then you are running too rich, and you risk washing a cylinder out.

    If anything, it is insurance for your engine. If you are not hitting your target A/F ratios, then it can be an indication of something not up to speed in the motor such as a vacuum leak, bad gasoline, or fouled spark plugs. But bad A/F ratios will alarm you to stay off the boost until you get the issue addressed.

    RallySport Direct carries a large selection of Air Fuel Ratio Gauges to accommodate your interior. Choose from the popular AEM UEGO Wideband, or choose one of several great examples from Innovate or Prosport. We carry 52MM gauges, or 6MM gauges and everything in between as far as digital to analog. 

    Make sure you are hitting target boost numbers with a proper Boost Gauge. And if you need something nice to host these gauges in, check out many of our available Gauge Pods. 

     

    Shop featured products

    30 Results

    AEM Electronics UEGO X-Series Wideband Controller w/ Gauge Kit - Universal

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    30-0300

    AEM Electronics UEGO X-Series Wideband Controller w/ Gauge Kit - Universal

    4.9(9)
    $218.00
    AEM Electronics UEGO Wideband Controller 4.9LSU AFR Gauge - Universal

    4 In Stock

    30-4110

    AEM Electronics UEGO Wideband Controller 4.9LSU AFR Gauge - Universal

    4.4(13)
    $217.09
    Innovate Motorsports DB-Red Wideband Kit w/ LC-2 and O2 Sensor - Universal

    37960

    Innovate Motorsports DB-Red Wideband Kit w/ LC-2 and O2 Sensor - Universal

    5.0(9)
    $287.19
    ProSport Wideband Air Fuel Ratio Digital Gauge w/O2 Sensor Blue 52mm - Universal

    PSAFRLCDWB4.9BLUWO

    ProSport Wideband Air Fuel Ratio Digital Gauge w/O2 Sensor Blue 52mm - Universal

    4.0(1)
    $204.12
    ProSport Premium Evo Digital Wideband Air Fuel Ratio Kit w/Bosch Sensor - Universal

    216EVOAFRPK4.9-WO-NW

    ProSport Premium Evo Digital Wideband Air Fuel Ratio Kit w/Bosch Sensor - Universal

    4.5(2)
    $237.60
    ProSport Wideband Air Fuel Ratio Gauge w/Bosch Sensor Blue 52mm - Universal

    216EVOAFRWB4.9-WO

    ProSport Wideband Air Fuel Ratio Gauge w/Bosch Sensor Blue 52mm - Universal

    3.0(1)
    $225.72
    Innovate Motorsports MTX-AL Analog Air/Fuel Ratio Gauge Kit - Universal

    38550

    Innovate Motorsports MTX-AL Analog Air/Fuel Ratio Gauge Kit - Universal

    3.0(1)
    $339.64
    AEM Electronics X-Series Wideband AFR Gauge w/OBDII Connectivity - Universal

    8 In Stock

    30-0334

    AEM Electronics X-Series Wideband AFR Gauge w/OBDII Connectivity - Universal

    $280.00
    Innovate Wideband AFR & Boost Controler w/ Digital Display - Universal

    38820

    Innovate Wideband AFR & Boost Controler w/ Digital Display - Universal

    $549.45
    ProSport Wideband Air Fuel Ratio Guage w/O2 Sensor Blue/White/Amber 52mm - Universal

    1 In Stock

    216HLAFR270-PKWB4.9-WO

    ProSport Wideband Air Fuel Ratio Guage w/O2 Sensor Blue/White/Amber 52mm - Universal

    $232.20
    ProSport Wideband Air Fuel Ratio Gauge w/O2 Sensor Blue/White 52mm - Universal

    216SMWBAFR-WO-SF

    ProSport Wideband Air Fuel Ratio Gauge w/O2 Sensor Blue/White 52mm - Universal

    $216.00
    Innovate Motorsports LM-2 Wideband Standard Kit Single Channel - Universal

    38060

    Innovate Motorsports LM-2 Wideband Standard Kit Single Channel - Universal

    $820.98
    Innovate MTX-L Plus: Advanced Digital Wideband Air/Fuel Ratio Gauge Kit (3ft Sensor Cable Incl.) - Universal

    1 In Stock

    39240

    Innovate MTX-L Plus: Advanced Digital Wideband Air/Fuel Ratio Gauge Kit (3ft Sensor Cable Incl.) - Universal

    $287.19
    Autometer Z-Series Wideband Air/Fuel Ratio Gauge Digital 52mm - Universal

    2679

    Autometer Z-Series Wideband Air/Fuel Ratio Gauge Digital 52mm - Universal

    $302.54
    ProSport Digital Wideband Air Fuel Ratio w/Sensor Amber 52mm - Universal

    PSAFRLCDWB4.9AMBWO

    ProSport Digital Wideband Air Fuel Ratio w/Sensor Amber 52mm - Universal

    $204.12
    Innovate Motorsports ECF-1 Ethanol Advanced Gauge Kit w/out Ethanol Sensor - Universal

    39100

    Innovate Motorsports ECF-1 Ethanol Advanced Gauge Kit w/out Ethanol Sensor - Universal

    $588.80
    ProSport Air Fuel Ratio Gauge Electrical 52mm Blue/White - Universal

    216BFWBAFSM

    ProSport Air Fuel Ratio Gauge Electrical 52mm Blue/White - Universal

    $61.27
    ProSport JDM Dual Display Wideband Air Fuel Ratio Kit - Universal

    216JDMAFR4.9-WO

    ProSport JDM Dual Display Wideband Air Fuel Ratio Kit - Universal

    $232.20
    ProSport Wideband Air Fuel Ratio w/O2 Sensor Green/White 52mm - Universal

    216SMWGAFR-WO-SF

    ProSport Wideband Air Fuel Ratio w/O2 Sensor Green/White 52mm - Universal

    $216.00
    Digital Wideband O2 Controller KIT/ LAMBDA CABLE/ 8 FT - Universal

    38770

    Digital Wideband O2 Controller KIT/ LAMBDA CABLE/ 8 FT - Universal

    $247.84

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