AEM Adjustable Fuel Pressure Regulator For Acura Civic / CRX Prelude 25-303BK. BRAND NEW IN BOX. Not for sale or street use in CA & CARB states. AEM’s For Honda/For Acura Adjustable Fuel Pressure Regulators are capable of supporting enough fuel flow for engines up to 1000 horsepower. Our patented interchangeable discharge ports enable the regulator’s output to match the output of any fuel pump. AEM includes a custom barb fitting to accommodate the factory fuel hose and the base of each regulator is tapped to accept a -6 AN or 9/16×18 fittings. CNC-machined from 6061-T6 billet aluminum. Mounts directly to O. Fuel rail or AEM High Volume Fuel Rail. Patented interchangeable discharge orifices match output of virtually any fuel pump. Accept a -6 AN or 9/16×18 fittings. Adjustable from 20 psi to maximum fuel pump capacity. Interchangeable discharge ports match regulator output to output of any fuel pump. No additional parts required for installation. Manufactured and assembled in the USA. Patent # 6,298,828. CP Cometic ACL Ferrea and ARP Kits. Custom Made Package Deals. Head and Main Studs. Your address must be confirmed. Buyers who pay with unconfirmed addresses will not be accepted. We always look to satisfy our customers in whatever needs they may have.