In stock


Shipping in 2-4 business days
Free Shipping over $99
Hassle Free Returns

Quick Specs

  • Size:2-5/8" (66.7mm)
  • Type:Mechanical
  • Range:140-280 °F
  • Lighting:Incandescent
  • Instructions: Download PDF


Engines don’t like high water temperatures, Heat is the enemy of performance and reliability. Keep tabs on your temps with the most accurate, quickest responding water temperature gauge on the market. AutoMeter’s advanced bourdon tube meter movement provides unparalleled performance in the most demanding applications. A 6’ capillary tube and 1/2” NPT mounting nut are included.

Feature Points
  • Traditional incandescent lighting illuminates around the perimeter of the dial
  • Liquid dampened movement provides smooth pointer movement and extended service life in harsh environment applications.
  • Liquid filled design for superior resistance to shock, vibration, and the elements.
  • AutoMeter’s race proven mechanical instruments provide trusted accuracy while being simple to install
  • No electrical system required for gauge operation - compatible with every street or race vehicle
  • Gauge kit includes 1/2" NPT adapter, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation
Ships With
  • 1/2" NPT adapter/fitting.
  • 3245
California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm



  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getReviews, 9.16ms
  • bvseo-msg: HTTP status code of 404 was returned;


 Removing the dash on 68 mustang & saw a pipe connected to the back of the water temp gauge (liquid filled garage). When I undid the nut some kind of oily substance leaked out. have I done any damage and stats the correct way to remove the garage 

Asked by: Goldie
If the nut holding the capillary tube was removed from the back of the gauge then the ether gas inside would be allowed to escape. If that happened the gauge would need to be replaced.
Answered by: Alex at AutoMeter
Date published: 2023-07-10

my water gauge is pro comp liquide filled it has 5431 sticker on the back side what should i order to replace this with?

Asked by: JBG 1968
If you are looking to replace this gauge, 5431 is the correct part number. If not, please reach out to our tech team so we can try and find out what you would need.
Answered by: Thomas From AutoMeter
Date published: 2023-02-16

Is it possible to send this item to Japan?

Asked by: Kazuyoshi
Please give us a call at 815.895.8141 for international orders.
Answered by: Steve from AutoMeter
Date published: 2022-12-19

I am looking for liquid filled silver faced gauges. Are only certain models/types liquid filled?

Asked by: Bowzer46
Thank you for your question. We have a limited amount of liquid filled gauge options, however, we do have silver faced ones available. In our Ultra-Lite series there are Pro-Comp Silver gauges that are liquid filled. One of these is our part #4621
Answered by: Zach from AutoMeter
Date published: 2018-11-20

We have the autometer 5431 mechanical water gauge. We accidentally broke the line that goes to the manifold. Can we replace the line only or do we have to buy another gauge? If the line is sold separately what is the product number so we can buy it.

Asked by: Spedman
  • y_2024, m_7, d_19, h_7CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_5
  • loc_en_US, sid_5431, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_autometer-us
  • bvseo_sdk, p_sdk, 3.2.1
  • CLOUD, getContent, 9.05ms