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c-ummins Fuel Injector 4902921 is a high-precision, heavy-duty OEM-grade electronic fuel injector specifically developed for c-ummins M11 series diesel engines, including M11 CELECT, ISM11, and QSM11 variants. As a critical core component of the engine’s fuel supply system, it is responsible for atomizing diesel fuel into ultra-fine particles and delivering it to the combustion chamber with precise timing, stable pressure, and uniform distribution—directly determining the engine’s power output, fuel efficiency, and emission compliance. Crafted from high-strength heat-resistant alloy steel through micron-level precision machining and rigorous heat treatment, this injector boasts exceptional durability, corrosion resistance, and high-temperature tolerance (up to 530℃), making it ideal for the harshest working environments such as high pressure, heavy dust, long-term fuel erosion, and continuous heavy-load operations. It integrates advanced upgraded CELECT electronic control technology and a high-efficiency hydraulic servo system, enabling ultra-precise fuel metering (error ≤±0.12%) and ultra-fast response (＜1.1ms), which effectively eliminates fuel supply instability and ensures consistent, reliable performance across all engine speed ranges. Its high-precision four-orifice nozzle, coated with a wear-resistant, anti-clogging, and anti-carbon deposition nano-ceramic layer, ensures uniform and fine fuel atomization, promoting complete combustion, reducing fuel consumption by 24-27%, and minimizing harmful emissions (NOx, particulate matter) to meet Euro V, China National V, and EPA Tier 4 Final emission standards. The optimized internal flow channel design reduces fuel resistance, improves delivery efficiency, and extends the injector’s service life. As a direct OEM replacement part, it perfectly matches the original engine’s dimensions, installation interface, and electrical parameters, requiring no modific-ations during installation, thus significantly saving maintenance time and labor costs. Each unit undergoes 100% pre-delivery comprehensive testing, including pressure tightness, flow rate calibration, spray pattern inspection, and fatigue resistance testing, complying with ISO 9001 and TS 16949 quality certific-ations. Tailored to the high-load, long-hour operating characteristics of M11 series engines, it is widely applied in heavy-duty trucks, large excavators, industrial generator sets, heavy construction machinery, and marine auxiliary engines, providing a reliable, efficient, and cost-effective maintenance solution for equipment operators. It is not compatible with ISBE series engine injectors (such as 0 445 120 007) listed in relevant engine model change announcements.

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