JEGS 555-41010 Fuel Pressure Gauge Features:

• 0-15 psi reading for most carbureted applications
• 1/8 in. NPT male threaded fitting to screw into your existing fuel system
• Liquid-filled to slow down engine vibration of the needle
• Stainless steel case and bezel for long life and great looks
• 1 1/2 in. diameter black face for compact viewing such as under the hood

FAQ

Should fuel pressure gauges be liquid filled?

• Yes, liquid-filled fuel pressure gauges dampen vibration, prolonging gauge life by preventing internal components' wear and tear, ensuring accurate readings.

Why are some pressure gauges filled with fluid?

• Fluid-filled pressure gauges absorb shock, reducing needle movement caused by vibration, maintaining accuracy, and enhancing durability.

What is the filling liquid for a pressure gauge?

• The filling liquid for pressure gauges is typically glycerin or silicone oil, chosen for its stability and resistance to temperature changes.

What is the difference between liquid filled and non-liquid filled pressure gauges?

• Liquid-filled gauges have fluid inside, reducing vibration for accuracy and durability, whereas non-liquid filled gauges lack this damping, making them more susceptible to movement and wear.