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Product # 3579

  • 2-5/8" (66.7mm)
  • Digital Stepper Motor Digital Stepper Motor
  • 8:1-18:1 AFR
  • Incandescent
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Mirroring the functions of AutoMeter’s Street Wideband, the Digital Stepper Motor Wideband provides the most important functions necessary to make sure you’re extracting the most power possible, safely. An analog needle display integrates seamlessly with other gauges and easily illustrates rate of change as well as the actual value. Our advanced auto calibration system 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). Designed for gasoline applications, this wideband gauge provides the same degree of accuracy and response as the Pro version, but at a reduced cost. Data logging output is included for one wire or two wire systems. Our specially designed O2 sensor and wiring harness are included for ease of installation.

Feature Points

  • Traditional incandescent lighting illuminates around the perimeter of the dial
  • Gauge kit includes custom tuned .1 AFR Resolution Bosch LSU4.2 Sensor, 8ft. wiring harness, 304 stainless steel weld-in bung, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation
  • AutoMeter’s race proven digital stepper motor electric instruments provide unmatched accuracy which is further increased by utilizing a self calibration sequence during power up
  • Display range of 8:1 to 18:1
  • Suitable for use with gasoline powered engines
  • 12 and 16 volt compatible, compatible with nearly every street car or race car electrical system

Sending Units

  • 2243


  • M18X1.5 Fitting and Plug

Wire Harness

  • 5298

Bulb & Socket

  • 3220

Light Covers

  • Red 3214 & Green 3215

Mounting Hardware

  • 3245
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I have Autometer Air/Fuel Ratio gauge #3579 installed in my 71 GMC truck with a Pro-Flo 4 fuel injected 383 Chevy engine. With the truck at operating temp. The gauge was moving between 8/9? Is the O2 bad?

Asked by: DYNOMAC
Thank you for your question. With the pointer jumping between 8 and 9 the gauge is going through the calibration process for the O2 sensor. For further assistance please call our tech line at 866-248-6357.
Answered by: Steve from AutoMeter
Date published: 2020-02-24

I would like to hook-up both banks of a V8 . Do you have a harness that would allow , thru a switch , reading each bank separately

Asked by: Carnut?
Thank you for your inquiry. We do not offer a switching harness for our air/fuel gauges.
Answered by: Jim from AutoMeter
Date published: 2020-02-13

I have two of these installed in my collectors. They work great. My vehicle is getting too fast to watch closely for safety reasons. I would like to add a basic data logger to them. What do you recommend?

Asked by: Khoad
Thank you for your question. We do not have a specific data logger we recommend. You can use any data logger that will work with a 0-4v output range.
Answered by: Zach from AutoMeter
Date published: 2019-06-13

I have this kit for my carbureted car. I've welded a bung to each collector. It was suggested I put a 2243 on each collector and have a switch to toggle back and forth and test AFR on each side. Do you sell something to connect and have a switch?

Asked by: wbnapier
Thank you for contacting us. Unfortunately, due to the multiple wires required for the gauge to function, the low voltage involved, there is no practical way to run a switch and toggle between sensors that we can recommend. We can only recommend an actual dual channel wideband that you can find from our sister company, Innovate Motorsports: https://www.innovatemotorsports.com/
Answered by: Matt from AutoMeter
Date published: 2018-08-17

I'm using one of these gauges for a period correct look in my Z31. It works great, but I would like to piggy back a digital readout off of the sensor for better accuracy when doing on-the-road tuning and while on the dyno. Is there a way to do this?

Asked by: Ted Persing
Hi Ted, thank you for the question. We do not recommend piggy backing off the sensor for any reason. We do provide a 0-4V data logger output if that would possibly help.
Answered by: Matt from AutoMeter
Date published: 2018-02-02
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