Great for low pressure fuel systems or as a lift pump for efi systems. Designed to be used with unleaded or diesel fuels. Supplied with a 100 micron pre-filter & mounting bolts. Inlet & outlet ports are 1/8" NPT female thread, also supplied with 8mm ( 5/16" ) barb adapters. It flows 25 GPH and operates at 1.5-4 psi ( 0.10 - 0.27 bar ).