Cummins 147-0859 EFI Fuel Pump Assembly

The Cummins 147-0859 is a 12-volt electronic fuel injection (EFI) pump designed for Onan RV generator sets. It serves as a direct OEM replacement for Onan part numbers 147-0859 and 1470859. The pump assembly integrates the motor, pump element, and pressure regulator into a single module suitable for gasoline fuel systems. It ensures consistent fuel pressure delivery for stable engine operation under variable load conditions typical of recreational vehicle power generation. This component is validated for fitment on Onan generator models including the 5500 series and similar EFI-equipped RV generator platforms. The genuine Cummins Onan construction provides OEM-specification flow rates and electrical connector compatibility for seamless installation.