The 0445020119 is a genuine Bosch CR/CP1H3 series high-pressure common rail fuel pump. It carries the Cummins OEM part number 4990601 (cross-referenced with the updated superceded part number 5264243). This specific assembly is engineered for Cummins ISF 2.8 and QSF2.8 4-cylinder engines used in Foton Aumark light trucks, Foton Tunland pickups, and GAZelle Next commercial vehicles.
This CR/CP1H3 pump features a tri-plunger radial design driven directly by the engine timing gear mesh. It integrates a mechanical fuel lift pump on the rear cover and a flange-mounted fuel metering unit (IMV). The assembly regulates volumetric fuel flow to sustain a constant 1600 bar rail pressure across the entire RPM range of the 2.8L block.
Internal plunger wear or a sticking inlet metering valve on old pumps causes immediate pressure drops. On Cummins engines, this failure triggers active ECM fault codes such as FC559 (low rail pressure) or FC2216 (fuel pump delivery pressure low). Installing this new CR/CP1H3 0 445 020 (OEM 4990601) assembly restores factory volumetric efficiency, cures engine limp-mode, and eliminates hard hot-starting.
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