NEW GENUINE AEM FUEL PRESSURE REGULATOR. DESIGNED, TESTED, AND MANUFACTURED IN THE USA! SEALED IN FACTORY AEM PACKAGE. AEM PART # 25-300BK. THIS REGULATOR CAN BE USED WITH BOTH E85 AND GASOLINE. Universal Adjustable Fuel Pressure Regulator is capable of supporting enough fuel flow for engines up to 1000 horsepower. Patented interchangeable discharge ports enable the regulator’s output to match the output of any fuel pump. Our universal FPR is tapped to accept a -6 AN, or 9/16? Universal fuel pressure regulator adapts to virtually any vehicle. Interchangeable discharge ports match regulator output to output of any fuel pump. Adjustable from 20 psi to maximum fuel pump capacity. Supports fuel flow in racing applications up to 1,000 horsepower. CNC-machined from 6061-T6 billet aluminum. Manufactured and assembled in the USA. Patent # 6,298,828. Part Number: AEM 25-300BK. Condition: 100% NEW Design: Adjustable Fuel Pressure Regulator Horsepower Capability: 1000HP Operating Pressure: 25-120 PSI. What differentiates us from other sellers? Secondly, we are members of the Specialty Equipment Manufacturers Association (SEMA) and our research into fuel system fitment and design ensures you are receiving a quality product that fits the first time and lasts the life of the vehicle. Payments are processed securely through Authorize. Net.