FASS PS-1013 Replacement Base Spring for Diesel Fuel Systems

The FASS PS-1013 is a replacement base spring designed for 150 GPH FASS fuel pumps, providing 55 PSI output pressure. This internal pressure regulator spring is a critical component in FASS Fuel Air Separation Systems, controlling the fuel delivery pressure from the pump to the engine.

Key Features:

• Designed for FASS 150 GPH diesel fuel pump systems
• Provides 55 PSI regulated fuel pressure output
• Direct replacement for factory base spring
• Works with ball-style pressure regulator assembly
• Allows pressure customization for modified applications

This base spring is located beneath the return fitting cap on FASS fuel pumps and works in conjunction with a rubber ball to regulate fuel pressure. Installing a higher-pressure spring like the PS-1013 can increase fuel system pressure from stock levels to 60+ PSI, making it ideal for diesel trucks with performance modifications or higher fuel demand requirements. The spring provides consistent pressure regulation while maintaining the fuel air separation benefits of the FASS system.

Application: Compatible with FASS Titanium Series and other FASS diesel fuel system pumps that use replaceable pressure springs. Commonly used on Cummins, Duramax, and Powerstroke diesel applications.