0-15 Psi Fuel Press Gaug

The Holley 0-15 PSI Fuel Pressure Gauge (HLY26-504) is a vital analog diagnostic tool for mechanics, engine builders, and performance enthusiasts working with carbureted and fuel-injected engines. This mechanical gauge measures fuel system pressure within the 0–15 PSI range, making it suitable for low-pressure carburetor systems, fuel pump testing, and baseline fuel delivery diagnostics.

Designed for reliability, this Holley fuel pressure gauge features a full-sweep 1-1/2 inch diameter dial face with clear white markings for easy reading in various lighting conditions. The liquid-filled design helps to dampen needle oscillation and vibration, ensuring stable and accurate pressure readings even during engine operation or on rough terrain. A 1/8 inch NPT port allows for compatibility with standard fuel line adapters, and the mechanical movement requires no electrical power.

This gauge is particularly beneficial for carburetor-equipped vehicles, vintage hot rods, street machines, and fuel system test benches, providing a straightforward and durable solution for diagnosing fuel system issues. Its compact size and lightweight design make it easy to mount on engine blocks, fuel rails, or dashboard panels without adding unnecessary bulk.