Delphi FG1223 Fuel Module Delphi fuel modules and pumps are designed to deliver an immediate, uninterrupted flow of fuel to the engine's fuel rail and injectors at the specified system pressure, resulting in more efficient operation Where required, fuel assemblies include integrated fuel level sensing components that deliver an accurate reading of the fuel level in the tank to the fuel gauge Delphi fuel pump assemblies are built with OE-validated parts and include OEM-grade wiring, electrical connectors and level sensor assemblies that deliver increased performance, durability and reliability over other aftermarket fuel pumps