The Cummins fuel injection pump 4989266 5262703 for B4.5 B6.7 ISB6.7 QSB4.5 QSB6.7 is a fluid pump from Cummins. It moves liquid or air through a system by generating flow and pressure, drawing fluid in and discharging it under pressure. It is commonly in hydraulic power units, lubrication systems, and process fluid transfer.
