Holley is proud to announce the availability of their carbureted Bypass Regulator, P/N 12-803BP. The Holley Bypass Regulator is ideal for carbureted fuel systems that require a fuel return to the tank. The Holley Bypass Regulator features commonly used 3/8” NPT threaded port, which include 1 Inlet, 1 outlet and The fuel return. Using a bypass regulator results in a quieter and smoother fuel pump operation. The Holley Bypass Regulator leaves the factory preset to maintain fuel pressure at 7 PSI, but is adjustable from 4.5 to 9 PSI. For more information contact Holley Tech Service, P.O. Box 10360, Bowling Green, KY 42102-7360. Telephone 270-781-9741. For nearest dealer: 1-800-HOLLEY-1. Or visit us on our web: www.holley.com.