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Air/Fuel Ratio (EGT) Monitoring Systems

JEGS carries a number of air/fuel ratio meters, gauges and monitoring systems. Tuning a vehicle to the right air/fuel mixture can improve performance and increase fuel mileage. For racing applications, an air/fuel meter lets you get the most out of a race engine and can help you tune for atmospheric conditions. Trust JEGS to provide top of the line air/fuel ratio meters, gauges and monitoring systems at the best prices!

Individual Products Product Groups
Gauges & Tachs Air/Fuel Ratio (EGT) Monitoring Systems


AEM Replacement Wideband UEGO O2 Sensor Accurate to 0.1 AFR


Replacement Wideband UEGO O2 Sensor
  • Accurate to 0.1 AFR
  • Bosch LSU 4.9 Sensor
  • Replacement for 30-4110
  • $116.99
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    AEM X-Series Inline Wideband UEGO (O2) Controller Accurate to 0.1 AFR


    X-Series Inline Wideband UEGO (O2) Controller
  • Accurate to 0.1 AFR
  • 0-5V analog output
  • Bosch 4.9 LSU sensor & 02 Sensor Bung
  • $235.57
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    AEM Universal EMS Wideband UEGO Sensor Kit Bosch LSU 4.2 Sensor


    Universal EMS Wideband UEGO Sensor Kit
  • Bosch LSU 4.2 Sensor
  • Weld-On Bung
  • Connector
  • Wire-Seals and Pins
  • $147.28
    Estimated Ship Date: 12/26/17
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    Denso Denso Oxygen & Air/Fuel Sensors


    O2 Sensor 2005-1999 FORD LINCOLN MERCURY MAZDA EXPEDITION EXPLORER F-150 FREESTAR RANGER WINDSTAR NAVIGATOR MONTEREY MOUNTAINEER B-SERIES P/U
    $32.99
    $32.53
    ON SALE - $0.46 OFF
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    AEM Replacement Sensor and Bung Kit Includes a Bosch 4.2LSU Wideband UEGO Sensor


    Replacement Sensor and Bung Kit
  • Includes a Bosch 4.2LSU Wideband UEGO Sensor
  • Stainless Steel Bung
  • Both Cools the Sensor Body & Minimizes Restriction in Exhaust Port
  • Use with 017-30-2340
  • $103.65
    Estimated Ship Date: 12/18/17
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    NGK Spark Plugs NTK/NGK OE Identical AFR Sensor 2003-08 Honda/Acura (See More Info)


    NTK/NGK OE Identical AFR Sensor
  • 2003-08 Honda/Acura (See More Info)
  • 5-Wire, Non-Flanged
  • Wideband Zirconia
  • $109.99
    Estimated Ship Date: 12/22/17
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