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Quick Specs

  • Size:2-1/16" (52.4mm)
  • Type:Air-Core
  • Range:100-250 °F
  • Lighting:Incandescent
  • Instructions: Download PDF


A high water temp can be detrimental to an engine. Heat is the enemy of performance and reliability. Keep tabs on your temps with the most trusted water temperature gauge on the market. AutoMeter’s advanced 1/8” NPT temperature transducer is included for a simple installation on any application.

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 1/8” NPT temperature sender, 3/8” and 1/2" NPT adapters, 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 while keeping hazardous fluids outside of the vehicle
Ships With
  • Includes Sending Unit: 2258
  • 3/8" NPT and 1/2" NPT adapter fittings
  • 2230
California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm



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QUESTIONS: equus. 280° f. Max need details

Asked by: Spazz
Please contact Tech Support directly: [email protected] for assistance with this product.
Answered by: Jim from AutoMeter
Date published: 2024-02-05

Have a 05 RAM 2500 with 2 1/16" pillar gauges 3 Q's. 1) Do I need anything special (besides mount) to move them above the mirror? 2) Are there red or orange lights to replace the white? pref. LED 3) Can the bezel be changed? pref. black

Asked by: rpep63
You should be able to relocate these gauges without issue. The T3 bulbs listed here will work: The bezel is pressed on by machine and cannot be removed by the consumer.
Answered by: Jim from AutoMeter
Date published: 2022-08-26

Hello, the glass fogs up inside a few minutes after starting the car, even though it's 80° F and there's no excess humidity. How can I prevent the gauge glass fogging up? Thanks.

Asked by: Dronner
Unfortunately things like this can happen with it shipping from our location here in Illinois. The best thing would be to use a hair dryer or heat gun and keep it at a low heat setting. Keep the dryer/heat gun roughly 3-4" away and evaporate the moisture within the unit. If there are any issues after this please give us a call at 866-248-6356.
Answered by: Steve from AutoMeter
Date published: 2023-08-28

I don't understand in detail the pdf with instructions that you posted on your website. Please can you post or email me a different installation guide that is easier to understand or more detailed for this water temperature gauge? Thanks.

Asked by: Dronner
We only have the PDF instructions found on the website. If you have specific questions on the installation process you can give our tech support team a call at 866.248.6357 and we would be happy to walk you through it.
Answered by: Alex at AutoMeter
Date published: 2022-06-08

If I tap the sending unit to a hose line, do I need to attach a gound wire off the sending unit as well? Also, does 16 gauge wire work as well as the 18 gauge or do you recommend strickly using 18 gauge wire?

Asked by: Rick S.
If you are remote mounting the sending unit, you would need to ground the sending unit. 16 Gauge wire would work.
Answered by: Thomas From AutoMeter
Date published: 2022-05-17

Is this a mechanical or electric gauge?

Asked by: BobP58
This is an Air-Core, or a Short Sweep Electrical Gauge.
Answered by: Thomas From AutoMeter
Date published: 2022-05-11

what is the total outside dimension on a 2 1/16 gauge and total outside dimension on a 2 5/8 gauge

Asked by: rich041
Rich041, The dimensions of the outside of each of these gauges are as followed: 2-1/16": 2-1/4" 2-5/8": 2-7/8"
Answered by: Steve from AutoMeter
Date published: 2022-04-19

I have this Temp Gauge , I am changing the Intake and looking for a New Temp Sending Unit will the 2385 work with this Gauge , if not which one do I need , Thank You . Bob

Asked by: Bob 55
The correct sending unit for this gauge is 2258. The 2385 will not work correctly with this gauge.
Answered by: Jim from AutoMeter
Date published: 2022-02-10
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