FAST SHIPPING! BRAND NEW! The Spectre Performance Fuel Pressure Regulator Part # 2518 Inline 1-4 PSI is a high-quality performance part made of aluminum, designed to regulate fuel pressure for improved engine performance. This part is ideal for car enthusiasts looking to enhance the fuel delivery system of their vehicle, providing precise control over fuel pressure for optimal engine efficiency. With its California Prop 65 warning, this fuel pressure regulator ensures users are aware of potential hazards and takes responsibility for product safety.