Track-tested by record setting, professional racers, the Aeromotive Pro Stock Regulators were designed to be used with the Aeromotive A2000 Fuel Pump (P/N 11202) in either single or dual carburetor applications. Utilizing a new stainless steel valve, aluminum bronze seat, and an innovative opposed-spring design, the Pro Stock Regulators are engineered to be the quickest responding, most reliable, highest flowing regulators on the market. Adjustable from 4-8 PSI. ORB-12 inlet port. (Includes AN-12 to AN-10 male flare reducer fitting). P/N 13208 provides (4) ORB-06 outlet ports. 1/8' NPT gauge port. Includes mounting bracket.