Carter Competition Series Electric Fuel pumps are designed and engineered for constant use, Hi-Performance, and quiet operation. These positive displacement pumps are unique in that fuel cools the motor, No points to burn out, No shaft seals subject to deterioration and leakage, ''Free Flow'' constant fuel flow, Fuel intake strainer. Many models are designed to fit your specific needs and power requirements, all mounting hardware and bracket included. They are engineered to operate with Leaded, Unleaded, fuel additives, and Race gas. Pumps are designed for carburetor engines and to operate in pairs when needed to meet your MEGA HP requirements for Street, Strip, Off Road, and Marine! Pump with 1/4 NPT Inlet and Outlet. 4-6PSI output. No Regulator Required. 72GPH Free Flow.