Cummins original Fuel Injector Nozzle Assy 4903319 Replacement for OEM Fits M11 ISM11 QSM11 Diesel Engines R385LC-9 Cross Reference Parts 4026222 4062851 3411845 3411754 original new injector

Engineered for demanding industrial fuel delivery, the Cummins M11 Fuel Injector 4903319 delivers dependable performance across a wide range of heavy-duty diesel applications. This OEM replacement injector is manufactured to precise dimensional accuracy and undergoes factory performance testing, ensuring consistent operation in Cummins M11, M11 CELECT, M11 CELECT Plus, ISM11, QSM11, Industrial, and Marine engines. It serves as a direct alternative to cross numbers 4903319RX, 3411753, 3411754, 3087648, 3087648PX, 3411760, and 3411761.

The high precision nozzle design promotes enhanced fuel atomization and stable fuel delivery, supporting improved combustion efficiency and reduced exhaust emissions. Constructed with corrosion-resistant components and built for high-temperature endurance, this injector offers a long operational lifespan under continuous industrial and commercial workloads. It is well suited for Kenworth, Peterbilt, Freightliner, International, and Volvo trucks, as well as Komatsu, Terex, Hitachi, and Atlas Copco equipment, generator sets, and marine engines.

Common symptoms indicating injector replacement include excessive exhaust smoke, increased fuel consumption, reduced engine power, difficult cold starts, rough idle, engine vibration, and ECU fault codes. To maximize service life, use ultra-clean diesel fuel, replace fuel filters regularly, prevent water contamination, monitor engine smoke levels, check fuel pressure routinely, and perform periodic injector calibration for optimal engine reliability.