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Cummins Service/Parts Topics

New Fuel Lift Pump

Fuel System-Bosch VP44-ISB

Market Application-All

This Service/Parts Topic announces the release of new fuel lift pumps for ISB and QSB VP44 series engines.

The new fuel lift pumps, Part Numbers 4932707(12 VDC) and Part Number 4932708(24 VDC), obsolete and supercede the previous fuel lift pumps (Part Numbers 3990105 and 3990106). The new fuel lift pumps have an internal bypass circuit in the rotor housing that allows fuel to be drawn, with less restriction, from the fuel tank to the injection pump in the event of an inoperable fuel lift pump.

There are no visual differences between the new fuel lift pumps and the old fuel lift pumps. The new fuel lift pumps can only be identified by part number.

Fuel Lift Pumps

Voltage        New Lift Pump Part Number        Old Lift Pump Part Number

12 VDC                        4932707                                        3990105

24 VDC                        4932706                                        3990106

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