Unlock the full potential of your high-performance engine with Aeromotive's liquid filled fuel pressure gauge, meticulously designed to thrive in the most challenging environments. These gauges are an essential tool for anyone serious about automotive excellence, offering durability and accuracy right where you need it—under the hood of your high-performance engine. Each fuel pressure gauge is robustly constructed with a 1.5-inch diameter and features a 1/8" NPT male connection, ensuring a secure and straightforward installation. Available in 0-100 or 0-15 PSI pressure ranges, our gauges cater to diverse monitoring needs, from daily driving to competitive racing. What sets our gauges apart is the innovative liquid-filled design for enhanced durability and an integral equalizer valve that accurately maintains pressure readings. This unique feature compensates for temperature variations within the gauge case, providing you with precise readings regardless of heat fluctuations that typically impact performance.