Marshall MSB00100 Liquid Filled Fuel/Oil Pressure Gauge

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.