Mr. Gasket offers Micro-Electric Fuel Pumps for gasoline and diesel. These pumps regulate fuel pressure internally and our universal design makes for easy installation and service. Mr. Gasket 12S Micro Pump The 12S pump is designed for domestic carbureted gasoline engines only, and is not for use with diesel or fuel injected applications. These pumps include a 40 micron filter for clean operation and make an excellent fuel transfer pump. The flow rate for these pumps is 35 GPH at 4-7 PSI. Mr. Gasket 12D Micro Pump The 12D pump is engineered for diesel fuel transfer with a 12 volt negative ground system. These pumps include a 100 micron filter for clean operation. The flow rate for these pumps is 35 GPH at 4-7 PSI. Mr. Gasket 42S Micro Pump The 42S pump is designed for most import 4 and 6 cylinder carbureted applications. Do not use this pump with diesel or fuel injected applications. This pump makes for an excellent fuel transfer pump or a replacement pump for small engines, such as on a riding lawn mower. These pumps include a 40 micron filter and have a flow rate of 28 GPH at 2-3.5 PSI