Marshall Fuel Pressure Gauge 1.5" (0–100 PSI) Black — Silicone-Filled, Stainless Case

Marshall LBB00100 is a compact 1.5" fuel pressure gauge, silicone-filled and shock-resistant, that monitors 0–100 PSI with a stainless steel case and 1/8" NPT back connection.

Built for machines and vehicles that need dependable, vibration-resistant instrumentation, this Marshall fuel pressure gauge combines rugged materials and a practical design to deliver repeatable readings in demanding environments. Its silicone (liquid) fill reduces pointer flutter from engine vibration, while the stainless steel case and brass internals resist corrosion from fuel system exposure. An easy-access vent plug lets trapped air escape so you get accurate measurements every time.

How does the Marshall gauge keep readings steady under vibration?

The gauge is filled with silicone liquid to dampen internal movement and minimize pointer bounce caused by engine and road vibration. This mechanical damping preserves readability and extends internal component life without any electronic stabilizers.

• Silicone liquid fill for vibration and shock damping
• Reduces pointer flutter for stable, usable readings
• Helps protect internal parts from repeated shocks

What materials and connections ensure long-term reliability?

Marshall specified a stainless steel case and bezel for corrosion resistance, with brass internal components that stand up to typical fuel-system environments. The 1/8" NPT center-back port is an industry-standard fitting that simplifies plumbing into existing fuel lines or test rigs.

• Stainless steel case resists corrosion and physical damage
• Brass internals resist chemical wear from fuels and additives
• Standard 1/8" NPT center-back connection for straightforward installation

How do I install and get accurate readings from the LBB00100?

Install the gauge using the 1/8" NPT center-back thread into a compatible port or adapter. Before taking readings, open the accessible vent plug to expel trapped air, then re-secure it; this ensures the needle reflects true system pressure instead of a dampened or offset reading.

• Thread into a 1/8" NPT port or adapter for center-back mounting
• Use the vent plug to remove air pockets before final reading
• Check for leaks at the connection and tighten to appropriate torque

What measurement range and visibility features does this gauge offer?

The 1.5" dial covers 0–100 PSI, a range suitable for most fuel system diagnostics and monitoring tasks. A high-contrast black dial with a red pointer improves readability at a glance, while the compact size fits tight instrument panels and test setups.

• 0–100 PSI scale for typical fuel pressure monitoring
• Black face and red pointer for quick visual reading
• Compact 1.5" diameter fits constrained dash or test panel spaces

Who this is for: technicians, motorsports crews, hobbyists, and engineers who need a small, durable fuel-pressure gauge that performs reliably in vibration-prone environments. If you require a straightforward mechanical gauge with corrosion-resistant housing, brass internals, silicone damping, and a standard center-back connection, the Marshall LBB00100 is engineered for those use cases.