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The 5491515 fuel injector is a high-precision electronically controlled common rail component specifically developed for Dongfeng c-ummins (DCEC) series diesel engines, which is a core part matching Dongfeng c-ummins’ B, C, L series engines with displacement ranging from 3.9L to 8.9L and power coverage from 19kw to 562kw[superscript:5]. It features full compatibility with Dongfeng c-ummins core models such as ISBe3.9L, ISBe4.5L, ISDe4.5L, 6CT8.3, ISL8.9 and Foton ISG engines, which are widely used in light, medium and heavy trucks, industrial machinery and generator sets[superscript:2][superscript:5]. It offers seamless interchangeability with OEM cross reference numbers 5491515, 4307468, 4307475, 5461710, 0445110428, fully complying with Dongfeng c-ummins’ strict quality standards and technical specific-ations for high-pressure common rail systems, which are renowned for their precision, durability and strong adaptability to complex working conditions of commercial vehicles and engineering machinery. As a direct OEM replacement part, it perfectly matches the displacement range and power output of Dongfeng c-ummins and Foton ISG engines, integrating smoothly with the engine’s high-pressure common rail fuel system and electronic control systems, making it a dependable replacement for Dongfeng c-ummins and Foton ISG engine fuel injectors. This injector is a crucial component for engine performance, widely applied in various working scenarios such as Dongfeng commercial vehicles, Foton Auman trucks, crawler excavators, industrial equipment, diesel generators and medium-sized buses—typical applic-ation fields of Dongfeng c-ummins engines[superscript:5]. Functioning as a high-precision electronically controlled solenoid valve, it operates as a normally closed valve—remaining closed without control signals and opening when the ECU sends an injection command, ensuring precise fuel delivery. Capable of withstanding the fuel system’s high-pressure requirement of up to 1800 bar, it ensures stable and efficient fuel delivery even under long-term full-load operation in harsh environments with dust, high humidity, or extreme temperature fluctuations. It responds accurately to signals from the engine’s ECU (Electronic Control Unit) with an ultra-fast response time of <0.1ms, ensuring precise fuel metering (with an error of no more than ±2%) and optimal combustion efficiency, which is critical for meeting strict emission standards such as Euro VI, a standard that Dongfeng c-ummins engines can fully comply with[superscript:5]. This level of precision is achieved through micron-level manufacturing, with a 2μm plunger clearance—equivalent to 1/50 of a human hair—and precision-machined spray holes for ultra-fine atomization, cooperating with the engine’s cylinder design to ensure uniform fuel-air mixing. This not only reduces exhaust emissions to meet relevant environmental standards but also improves fuel economy and reduces engine noise and vibration. Equipped with advanced multi-stage injection technology (pre-injection, main injection, post-injection), it optimizes the combustion process, enhances idle stability, and significantly extends the engine’s service life. Its enhanced anti-wear and corrosion-resistant design, featuring a precision-ground high-speed steel plunger and hardened stainless steel nozzle tip, effectively resists abrasion, corrosion from harsh fuels, and high-pressure impact, adhering to Dongfeng c-ummins’ strict production standards for reliable performance and longer service life. Constructed with premium heavy-duty cast steel and high-speed steel through strict screening, including high-strength steel for the body, high-temperature resistant copper solenoid coil, and high-seal O-rings for effective oil-fuel separation and leakage prevention, this injector boasts excellent adaptability to extreme temperatures (-40°C to 180°C) and harsh working conditions. Every unit undergoes rigorous factory testing, including pressure calibration, flow measurement, spray pattern validation, and leakage checks, and has obtained relevant certific-ations such as ISO 9001, CE, TS 16949 and ROHS, ensuring reliable performance and consistent quality. With a comprehensive set of OEM cross reference numbers, it offers ready-to-ship inventory, customizable neutral packaging (carton or wooden case) options, a 3-6 month warranty, and reliable after-sales support, with delivery available within 5-7 working days for small orders via DHL, FedEx, TNT or UPS, making it the ideal choice for maintaining the performance, efficiency, and longevity of Dongfeng c-ummins and Foton ISG engines in various demanding commercial, industrial and construction scenarios.

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