Cummins D4326959 Fuel Injector Assembly

This common rail fuel injector assembly (Part Number D4326959) is engineered for Cummins ISZ, QSZ, and 6CT8.3 series diesel engines. It utilizes a solenoid-actuated control valve for precise fuel metering under high-pressure common rail operation exceeding 1800 bar. The injector body is manufactured from high-speed steel and alloy steel to ensure durability under extreme combustion cycles. Net weight is 1.65 kg with packaging dimensions of 24 x 7 x 5 cm. It serves as a direct replacement for Cummins part numbers 4326959, 2872544, 4955080, and 2872289. Primary applications include heavy-duty commercial vehicles, construction machinery, and stationary power generation equipment utilizing the specified engine platforms.