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Quick Specs

  • Size:2-1/16" (52.4mm)
  • Type:Mechanical
  • Range:30 IN HG/30 PSI
  • Lighting:Incandescent
  • Instructions: Download PDF


The standard in the industry, AutoMeter’s Mechanical Boost/Vac Gauges have found their way into more builds than any other. Using a patented, high precision bourdon tube meter movement, there isn’t another gauge on the market that can lay claim to the levels of accuracy or durability you’ll find here. A simple 1/8” NPT pressure connection requires no electrical hookup for operation. Includes 1/8” NPT fittings and nylon line kit.
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
  • Gauge kit includes 1/8” nylon line, T-Fitting, vacuum fitting, compression fittings, bulb and socket assembly, red and green bulb covers, mounting hardware, and detailed instructions for installation
  • Mechanical movements provide accuracy and durability even in the harshest environments
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, T - Fitting
  • 2230
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The needle fell off my 4303 guage. Can you repair it or do I have to buy a new one?

Asked by: Anonymous
We can repair most issues with our gauges. Our service form can be found at:
Answered by: Alex at AutoMeter
Date published: 2023-03-17

The light stopped working in my 4303 ultra lite Pro Comp boost gauge. How can I fix it?

Asked by: Daddy-0
Thank you for contacting us. The 4303 has a removable light socket and has a replaceable bulb. We offer the complete bulb and socket as model 3220. The bulb is a #161 and is a common auto bulb and should be readily available through most auto parts stores
Answered by: Sarah from AutoMeter
Date published: 2021-08-17

Do you have a mount for this. Thank you

Asked by: Thank youjim71
Thank you for your question. This gauge will include a mounting bracket to hold it in a dash or dash panel. You can also purchase an 2-1/16" mounting cup or panel we offer and this gauge will be compatible with it.
Answered by: Zach from AutoMeter
Date published: 2018-12-13

Currently have one and the needle seems to sit at 2.5 pounds at base , is there a way to rest or recalibrate this back to base 0 so its not 2-2.5 lbs off?

Asked by: Grayson
Thank you so much for contacting us, and I'm sorry to hear about your gauge being out of calibration. While the unit isn't field serviceable, we are more than happy to recalibrate at our shop for you. There is never a charge for diagnostic work, and if there's anything at all that would cost you money, we'll contact you before proceeding. In the instance there is a charge, it is always significantly less expensive to repair one of these gauges than to replace it outright. You can find our service information form here: Hope this helps!
Answered by: Joseph From AutoMeter
Date published: 2023-12-12
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