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Quick Specs

  • Size:2-1/16" (52.4mm)
  • Type:Digital
  • Range:6:1-20:1 AFR
  • Lighting:Digital LED
  • Instructions: Download PDF


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 LSU 4.9 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, mounting hardware, and detailed instructions for installation
  • 0-5v data and serial data outputs 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
Ships With
  • Yes
  • M18X1.5 Fitting and Plug
  • Wire Harness
  • 2230
California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm



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Can it work without the sensor.. i mean i have haltech WBC installed on my car.. can i use the output and tap it into the input wire of the gauge?

Asked by: Victorgarage
Thank you for your question. No, it will not work with your haltech WBC, it must be used with the included sensor.
Answered by: Zach from AutoMeter
Date published: 2019-04-15

Will the gauge work on a diesel engine?

Asked by: Sam89
Hi Sam, thank you for the question. While our Wideband gauges are compatible with diesel, none of our models are capable of reading the really high 80:1 ratio you'll see on a diesel. Our sister company Innovate Motorsports does offer a model capable of reading up to 99:1
Answered by: Matt from AutoMeter
Date published: 2018-10-18

I have found that there may not be enough room prior to the downpipe cat to add a second bung for my AFR sending unit. Is there a way to supply the stock SES (?) with a signal as well as my wideband?

Asked by: Robert4
Hi Robert, thank you so much for contacting us. Unfortunately, while you can use the output from the gauge to run an aftermarket EFI or datalogger, it is very unlikely that it would integrate with any of your factory equipment. Sorry for the bad news.
Answered by: Joseph At AutoMeter
Date published: 2018-05-21

I need to know if I have to use all of the features of the Pro+ immediately or can I build up to that over time. I have a stock setup currently and foresee the need for more features in the future. Anything I should be aware of?

Asked by: Robert4
Hi Robert, thank you for the question. While there are many features built in and available on the Pro Plus Wideband, they are optional.
Answered by: Matt from AutoMeter
Date published: 2018-04-23

What are the essential differences between to Pro AFR and the Pro plus?

Asked by: Robert4
Hi Robert, thank you so much for contacting us. In simplest terms, the Pro + has all of the features of the Pro, but also adds the newer 4.9 sensor, a Pro Control output (allowing the gauge to control different features on the vehicle) and enhanced data acquisition and serial outputs for integration into EFI, data acquisition systems or dynos. Hope this helps!
Answered by: Joseph Mills
Date published: 2018-03-29
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