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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.

Quick Specs

  • Size:2-1/16" (52.4mm)
  • Type:Digital
  • Range:6:1-20:1 AFR
  • Lightning: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 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
Ships With
  • 2243
  • M18X1.5 Fitting and Plug
  • 2230
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Will 6178 work on a 60s mopar with no data collection are wot trigger

Asked by: Christopher j
Thank you for your question. It will work as the unit will only need +12v power and a good ground.
Answered by: Natalia from AutoMeter
Date published: 2021-02-09

I just installed your wideband AFR gauge. Only getting the three dashes in the SSD and it doesn't respond to button pushes. Tech support said no connection to sensor; I unplugged, replugged, same problem. I need help.

Asked by: KurtL
You will want to see what the gauge is displaying when the sensor is disconnected and the unit is powered on. It should go through its countdown sequence and display 14.9 (+/-.02). If the gauge is displaying this then there is a connection issue between the sensor and harness. If the gauge has no change then there is something else going on with the unit that we would not be able to diagnose unless it came back to us for evaluation. I would recommend giving our tech line a call at 866-248-6357 for further assistance.
Answered by: Steve from AutoMeter
Date published: 2020-06-15

Will this gauge support the newer style LSU 4.9 sensor (Upgrade from the 4.2 sensor shipped with the kit)?

Asked by: Andrew2323
Thank you for your question. Unfortunately this gauge can only use P/N: 2243.
Answered by: Steve from AutoMeter
Date published: 2020-01-02

Is this compatible with diesel fuel or do you have a better option?

Asked by: Flatty
Thank you for your question. You unfortunately won't be able to use this on any diesel application. Fouling and/or permanent damage to the oxygen sensor over time will result if used with diesel fuel. We also do not carry any wideband that can be used with a diesel application.
Answered by: Steve from AutoMeter
Date published: 2019-10-22

Good afternoon, I would like to know if the wideband is complete for installation and by which company would you ship to Argentina. Thank you

Asked by: rapatuning
Thank you for your question. It will come with the sensor and harness necessary for installation. We ship via UPS.
Answered by: Zach from AutoMeter
Date published: 2019-08-28

Hello dear what is the part number for the wire harness and o2 sensor?

Asked by: Ignacio Olivos
Thank you for your question. 6178 will use wire harness #5232 and o2 sensor #2243 which is a Bosch LSU 4.2 o2 sensor.
Answered by: Zach from AutoMeter
Date published: 2018-11-26

Could I ask how long for repair and return to uk on a gauge that requires a new main led alpha/numerical screen, the gauge itself is working fine it just the readout has some dead pixels.

Asked by: edsw
Thank you for reaching out to us. We can not give you an exact time estimate, as it will vary depending on the individual circumstances. Our goal is always to have a product shipped back out within 7-10 business days of receiving it. To get a more accurate estimate for your situation you should call our tech support team at 815.895.8141
Answered by: Zach from AutoMeter
Date published: 2018-09-11

cobalt wideband afr,the led display has partial failed, ie some of the leds displaying numbers don't light up. I see others have had similar issues, is this an issue with these displays? I'm based in the UK so sending back for repair could be a hassle

Asked by: edsw
Thank you for contacting us and sorry for the problem. We certainly can evaluate the gauge and service it, but you would have to send it to us. While this form isn't required, it will show you the information required for sending it in.
Answered by: Matt from AutoMeter
Date published: 2018-09-10
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