Cummins 4061851RX Fuel Injector Assembly

The Cummins 4061851RX is a remanufactured electronic unit injector (EUI) designed for the Celect fuel injection system used on Cummins M11, ISM11, and QSM11 series diesel engines. It features a solenoid-actuated nozzle assembly that meters and injects fuel directly into the combustion chamber under high pressure. The injector body is constructed from high-strength alloy steel to withstand cyclic combustion loads and corrosion. The nozzle tip (part number 4061854) is precision-machined to ensure optimal spray pattern and atomization. Each unit undergoes full disassembly, inspection, component replacement, and calibration to OEM specifications on certified test stands. The remanufacturing process includes replacement of wear items such as the solenoid, valve set, and filter screen. The injector weighs approximately 1.72 kg and is packaged in a protective carton for shipment. This part replaces Cummins OEM numbers 4061851, 4061851RX, 4902921, 4903472, 4307516, 3087772, 4903084, and 4903319. It is compatible with heavy-duty trucks, construction equipment, generator sets, and marine applications powered by the M11/ISM/QSM engine platform.