Designed exclusively for the Aeromotive HP marine fuel pump, these HP marine carburetor fuel pressure regulators feature a bypass design that provides the ultimate dynamic fuel delivery system. These regulators are CNC-machined from 6061-T651 billet aluminum alloy with stainless steel hardware, and handsomely finished with a "bulletproof" Type III hard-coat anodized exterior. HP marine regulators also feature a stainless steel vacuum/boost port and are compatible with gasoline, alcohol, or diesel fuels.