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Product # 4391

  • 2-1/16" (52.4mm)
  • Air-Core Air-Core
  • 8-18V
  • Incandescent
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Keep tabs on the health and output of your vehicles electrical system safely and accurately. With a patented air core meter movement, this gauge operates with category defining accuracy anywhere from 8-18 volts on negative ground electrical systems. Installation is simple and it can keep you from being stranded on the side of the road.

Feature Points

  • Traditional incandescent lighting illuminates around the perimeter of the dial
  • 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system
  • Gauge kit includes bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation
  • AutoMeter’s race proven air-core electric instruments provide quick and accurate readings

Bulb & Socket

  • 3220

Light Covers

  • Red 3214 & Green 3215

Mounting Hardware

  • 2230
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Recently purchased this gauge and it is misreading 14V off of my 12V battery. Does this gauge need to be calibrated?

Asked by: TimB
Hi Tim, Your vehicle should be showing about 12.4 volts with engine off, and 13.6 to 14 volts with the engine running. If you are seeing 14 volts with the engine off, please contact our Tech Support Team at 866-248-6357. Thanks, Jim
Answered by: Jim from AutoMeter
Date published: 2020-04-29

What does air core mean ??

Asked by: Fatboy
Thank you for your question. Please use the link which will give you a breakdown of all of our gauge styles: https://www.autometer.com/resources/index/faq_view/id/78
Answered by: Steve from AutoMeter
Date published: 2019-12-24

How do I wire it up

Asked by: Danny 62
Thank you for your question. You will wire the ground terminal to a good engine or chassis ground. You will wire the Ignition terminal to a 12v power source. That is all the wiring necessary for this gauge.
Answered by: Zach from AutoMeter
Date published: 2020-05-03

Will this fit a 03 mercury marauder? I’m looking for the OEM oil and volt gauges for an 03 mercury marauder 

Asked by: Oraciom
Thank you for your question. None of our gauges are vehicle specific and are not made to be direct OEM replacements. These gauges are compatible with your vehicle, but you will need to use the provided sensors and wire the gauges independently of your OEM wiring.
Answered by: Zach from AutoMeter
Date published: 2019-02-13
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