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Marshall

Marshall MSB00100 Liquid Filled Fuel/Oil Pressure Gauge

★★★★★4.8 (137 reviews)

Liquid-filled 1.5" pressure gauge with stainless steel construction delivers vibration-dampened readings from 0–100 PSI.

$25.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Marshall MSB00100 is a 1.5-inch liquid-filled pressure gauge designed to deliver reliable, vibration-dampened readings across fuel, oil, and water pressure systems. The silicone fill inside the case absorbs shocks and pulsations that would otherwise cause the needle to bounce, making it particularly well suited for engine bays, compressor setups, and other environments where mechanical vibration is constant. With a measurement range of 0–100 PSI, it covers the monitoring needs of most automotive fuel and oil systems.

Construction quality is a standout feature. The stainless steel case resists corrosion from exposure to fluids and the elements, while brass internals provide dependable accuracy over time. The 1/8" NPT center back connection is a widely used standard, so installation is straightforward in most plumbing and fitting configurations. The black dial with a white pointer keeps the display clean and easy to read, and the compact form factor allows it to fit into spaces where a full-size gauge would be impractical.

Key Features

1.5" Fuel/Oil/Water Pressure Gauge, 0-100 PSI

Direct Mount with 1/8" NPT Center Back Connection

Black Dial, White Pointer, Black Case and Bezel

Liquid Filled, Shock Proof

Specifications

Dial Size
1.5"
Pressure Range
0–100 PSI
Mount Type
Direct Mount, 1/8" NPT Center Back Connection
Dial Color
Black
Pointer Color
White
Case/Bezel Color
Black
Fill
Liquid Filled (Silicone)
Case Material
Stainless Steel
Internals Material
Brass

Pros & Cons

👍 Pros

  • Liquid-filled design dampens vibration for stable, accurate readings in rough conditions.
  • Compact 1.5-inch dial fits in tight mounting locations.
  • Stainless steel case and brass internals resist corrosion from fuel, oil, and moisture.
  • Direct mount with standard 1/8" NPT connection simplifies installation.
  • Black dial with white pointer offers clear readability at a glance.

👎 Cons

  • 100 PSI maximum may be insufficient for high-pressure applications.
  • Small 1.5-inch dial can be harder to read from a distance compared to larger gauges.
  • Center back mount only — no bottom or panel mount option included.
  • No luminescent markings for reading in low-light conditions.

Frequently Asked Questions

It measures from 0 to 100 PSI, suitable for monitoring fuel, oil, or water pressure systems.
It uses a 1/8" NPT center back mount connection, allowing direct mounting without adapters in most standard fittings.
The silicone liquid filling dampens needle vibration and pulsation, providing steadier and more readable pressure readings in high-vibration environments.
The case is stainless steel and the internal components are brass, providing corrosion resistance and long-term durability.
Yes, it is rated for fuel, oil, and water pressure monitoring within the 0–100 PSI range.

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