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Truck Engine Parts Vg1034080003 7256757 0445214126 0445214112 0445226091 Common Rail Pipe for Excavator Diesel Engine Parts. The 0445226091 Common Rail Pipe is an original high-pressure fuel rail assembly designed for modern MAN heavy-duty truck common rail fuel systems. Manufactured with high-tensile alloy steel and precision CNC port machining, the 0445226091 common rail pipe maintains consistent fuel pressure balance across all cylinders. It serves as a reliable OEM direct replacement to restore full engine power, resolve running instability, and extend the service life of injectors and fuel system components for MAN commercial fleets.