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c-ummins Fuel Injector 3407776 is a premium OEM-grade precision component specifically engineered for c-ummins N14 series diesel engines, covering CELECT electronic control variants, CELECT Plus variants, and selected mechanical N14 models. As a vital core component of the engine’s patented PT (Pressure-Time) fuel supply system—c-ummins’ signature technology—it is engineered to atomize diesel fuel into ultra-fine, evenly distributed particles, delivering them to the combustion chamber with precise timing, stable high pressure, and optimal spray patterns. This directly dictates the engine’s power output, fuel efficiency, and long-term operational reliability, aligning perfectly with the diesel engine’s core demands of efficient combustion and high compression ratio performance[1]. Crafted from high-strength heat-resistant alloy steel with micron-level precision machining, rigorous heat treatment, and a specialized anti-corrosion, anti-wear ceramic coating, this injector boasts exceptional durability, capable of withstanding extreme operating conditions such as high temperatures (up to 570℃), high pressure (up to 3100bar), heavy dust, and high humidity. It integrates advanced dual-control technology—electronic CELECT control for N14 electronic models and precision mechanical control for mechanical variants—achieving ultra-accurate fuel metering (error ≤±0.04%) and rapid response (＜0.55ms), effectively eliminating fuel supply fluctuations and ensuring smooth engine operation even under sudden load changes. The high-precision 6-hole low-inertia nozzle, treated with anti-carbon deposition and anti-clogging nano-coating, ensures complete fuel atomization, promotes full combustion, reduces fuel consumption by 31-34%, and meets EPA Pre-2002 and relevant industrial emission standards, while also minimizing carbon deposits and extending the engine’s service life[3]. As a direct OEM replacement part, it perfectly matches the original engine’s installation dimensions, interface, and electrical/mechanical parameters, requiring no modific-ations during installation, which significantly reduces 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. Widely applied in heavy-duty trucks, industrial generator sets, construction machinery, oilfield power modules, and other equipment equipped with c-ummins N14 engines, it provides a reliable, long-lasting, and cost-effective maintenance solution for equipment operators. Exclusively designed for N14 series engines, it is not compatible with ISBE, M11, or other c-ummins engine series, ensuring optimal performance matching and operational safety. Its design aligns with c-ummins’ PT fuel system principles and the diesel engine’s high-compression, high-efficiency characteristics, optimizing combustion efficiency and complementing the engine’s inherent advantages of high torque and low fuel consumption[2].

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