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Product # 3670

  • 2-1/16" (52.4mm)
  • Digital Stepper Motor Digital Stepper Motor
  • 8:1-18:1 AFR
  • LED
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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

  • Modern white LED through-the-dial lighting provides clear visibility during nighttime use
  • 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
  • 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

Mounting Hardware

  • 2230
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what O2 sensor do i need for this?

Asked by: 2006GREY
Thank you for your question. This gauge uses our sensor #2243.
Answered by: Zach from AutoMeter
Date published: 2019-08-06

Could i have this sent with a black ring around the face instead of chrome?

Asked by: Hutch
Thank you for your question. You will have to contact our support team regarding custom orders or customization to any gauges. You can reach them at 815.895.8141 or you can send a contact request form here: https://www.autometer.com/contacts
Answered by: Zach from AutoMeter
Date published: 2019-01-03

i would replace one by digital version, what is your model direct compatible with harness and sensor.

Asked by: iceman
Thank you for reaching out to us. I apologize as I don't know if I'm fully understanding your question, but the 3670 Analog Wideband will share the same harness and sensor as our Street Series Wideband, like model 3379. They would each be interchangable, but each would only be sold as a complete kit with harness and sensor. If that didn't quite answer your question, please reach out to us by email here with some additional details: https://www.autometer.com/contacts
Answered by: Matt from AutoMeter
Date published: 2018-08-26

great product -- mine's in use for a year or so now. installed 6" beyond manifold, which is fiberglass tape wrapped. can you state the accuracy in the most likely operating range, say 11:1 to 17:1? as percentage or as ratio?

Asked by: tom jennings
Hi Tom, thank you for the question. Our advanced stepper motor Wideband A/F gauges matched with the Bosch O2 sensor will provide a very accurate result in the operating range. The sensor is accurate to 0.1 of an air/fuel ratio point and our gauge head tolerance will allow no more than 2% within the normally operating scale.
Answered by: Matt from AutoMeter
Date published: 2020-04-04

Can i get the pinout for this autometer 3670? I got the wrong harnes with my kit but if I knew the pinout I would be able to make it work.

Asked by: Hann
Hi Hann, thank you for reaching out to us. If you can please send an email request to our Service Team through this form. They should be able to provide you with a complete pin-out diagram via email: https://www.autometer.com/contacts
Answered by: Matt from AutoMeter
Date published: 2018-05-31

What about the responce time? Can I use this meter with good accuracy for tuning even at road tests, idle to WOT, finding bogs etc. ?

Asked by: Satellite_Leif
Thank you so much for the question. Our Wideband gauges are very responsive and accurate tools for tuning. Our digital Pro Plus model, however, will feature more tools like memory/recall, a programmable warning function, and uses the higher resolution Bosch LSU 4.9 Sensor: https://www.autometer.com/2-1-16-wideband-pro-plus-w-sensor-sport-comp.html
Answered by: Matt from AutoMeter
Date published: 2018-03-14
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