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Product # 3378

  • 2-1/16" (52.4mm)
  • Digital Digital
  • 6:1-20:1 AFR
  • Digital LED
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Knowing the exact air/fuel mixture running through your engine is the most important factor to extracting the highest levels of performance and durability. Not all wideband gauges are created equal. AutoMeter utilizes an advanced calibration method that automatically calibrates your gauge on every startup to assure you of the highest degree of accuracy over the entire lifespan of your sensor (no free air calibration is ever necessary). Compatible with nearly all fuel types, the AutoMeter Pro Wideband has a configurable display to pinpoint the exact range you want to keep an eye on. An advanced peak recall function and lean warning system make sure you’re safely making power, whether on the track or on the street. An automatically dimming display tailors light output for any condition. Data logging output is included for one wire or two wire systems in both lambda or AFR. Our specially designed O2 sensor and wiring harness are included for ease of installation. Quite simply, there isn’t a more accurate or easy to live with wideband gauge available on the market.

Feature Points

  • Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
  • 0-4v data output feed for ECU, data acquisition unit, or Laptop tuning
  • User programmable range for Rich/Stoic/Lean conditions
  • Peak recall/memory
  • 10:1 to 20:1 AFR range for gasoline applications
  • 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system
  • User Programmable Warning Function
  • Display data in Lambda or numerical A/F ratio

Sending Units

  • 2243


  • M18X1.5 Fitting and Plug

Wire Harness

  • 5232

Mounting Hardware

  • 2230
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Will this work with a stock ECU? As in does it have output for high/low based off 14.7? I'd like to install one before I have my aftermarket ECU, but obviously my stock ECU only deals with high/low AFR.

Asked by: RichterFry
Thank you so much for contacting us. I wouldn't recommend using this device with a stock ECU, and especially one that has a factory narrowband oxygen sensor. It will work great with aftermarket ECUs/data loggers, but you'll want to let your factory computer be supplied by a factory sensor. Most commonly, you'll simply install the included wideband O2 sensor in the exhaust stream in addition to the factory one. Hope this helps!
Answered by: Joseph At AutoMeter
Date published: 2018-05-16

Is this a single or dual o2 unit ?? If its a single one do you have a dual o2 one ?? And whats the part number for the dual one ?? Thanks

Asked by: Grumpy
Thank you so much for contacting us. This, like all of the AutoMeter wideband air/fuel gauges is a single channel only. We do not offer a dual channel, and in all but the most highly tuned applications, there really isn't a great deal of real world benefit to using a dual channel air/fuel gauge. Sorry we couldn't help.
Answered by: Joseph At AutoMeter
Date published: 2018-02-23

Hello can I buy it without sensor bosh? And what will be the price without a sensor?

Asked by: Aituning
Thank you so much for contacting us. Our wideband gauges use a version of the Bosch O2 sensor that we modify to work with them. This allows us to have better accuracy, response and avoid having to do any sort of manual calibration throughout the life of the gauge and sensor. As such, the gauge is not available without a sensor as only the AutoMeter sensor will work properly with it. Hope this helps!
Answered by: Joseph Mills
Date published: 2017-11-22
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