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Quick Specs

  • Size:2-5/8" (66.7mm)
  • Type:Mechanical
  • Range:0-100 PSI
  • Lighting:Incandescent
  • Instructions: Download PDF


The life blood of your engine, a lack of oil pressure is one of the most catastrophic scenarios that can happen. Knowing the precise pressure is critical to both its longevity and performance, as well as your peace of mind. AutoMeter’s Mechanical Oil Pressure Gauge utilizes the most advanced bourdon tube meter movement on the market to deliver accuracy and durability you won’t find anywhere else. A simple 1/8” NPT connection makes installation easy. Fittings and nylon tube are included and optional braided stainless line kits are available.
Feature Points
  • Traditional incandescent lighting illuminates around the perimeter of the dial
  • 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
  • Mechanical movements provide accuracy and durability even in the harshest environments
  • Gauge kit includes 1/8” nylon line, 1/8” NPT compression fittings, 1/4” NPT adapter, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation
Ships With
  • 1/8" NPT Male to 1/8" compression fitting, 1/8" NPT Female to 1/8" compression fitting, 1/8" NPT to 1/4" NPT bushing
  • 3245
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Dear sir, Where do I install the light on a mechanical autometer oil pressure 4621. Do I have to take of the plate at the back

Asked by: Boores
This light snaps into the hole in the back of the gauge:
Answered by: Jim from AutoMeter
Date published: 2023-05-04

What are the advantages of a liquid filled gauge compared to a dry gauge?

Asked by: GregH
Hi Greg, thank you so much for contacting us. A liquid filled gauge is typically intended for very severe service applications in which a lot of vibration or shock is present. The silicone dampening fluid in the gauge prevents damage from continuous exposure to extreme environments. Because the gauge is sealed to keep that fluid in, they are also sealed to keep water and dust out. That sealing isn't without it's tradeoffs as the readings can be influenced by extreme temperatures one way or the other. BWe counteract that with a vent screw on the top of the gauge to bleed off pressure that may cause an erroneously high reading. In most instances, a standard, non liquid filled AutoMeter gauge is more than adequate. We build a ridiculous amount of vibration and shock resistance into all of our gauges, so durability shouldn't be an issue. The liquid filled line is just another step up for really abusive applications. Hope this helps!
Answered by: Joseph At AutoMeter
Date published: 2018-05-24
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