Cummins 3913430 Water Pump Assembly

The Cummins 3913430 water pump is a belt-driven centrifugal coolant pump designed for the Cummins C-Series 8.3L engine family including 6C, 6CT, and 6CTA variants. It features a cast iron housing for structural rigidity and corrosion resistance in heavy-duty cooling circuits. The unit incorporates a 110mm (4.32 in) diameter pulley and a precision-ground mechanical seal assembly to maintain coolant integrity under high thermal loads. This assembly replaces multiple Cummins OEM part numbers including 3285323, 3802081, 3804883, 3806180, and 3907808. It is validated for use in commercial truck applications such as Kenworth K130/K150, Freightliner FS65, and Blue Bird buses equipped with ISB/ISC 8.3L engines, as well as construction machinery including Hyundai excavators and loaders, and Case/New Holland agricultural equipment. The pump is engineered to meet OEM flow rate and pressure specifications for reliable engine thermal management.