CUMMINS Factory QSL 2897414 4327072 4821827 4928421 Fuel Injector For ISL9.5 ISC8.3 Diesel Engine QSL Injector Truck Auto Parts Original New Injector

The 4821827 fuel injector is a high-precision electronically controlled common rail component specifically engineered for c-ummins QSL series diesel engines, with full compatibility with QSC8.3, QSL9, QSL9.3, ISL9.5 and 6C8.3 engines—core models in c-ummins’ medium-duty diesel engine lineup. It features seamless interchangeability with OEM cross reference numbers 4821827, 2897414, 4928421, 4327072, 4307452, 2872069, fully adhering to c-ummins’ strict quality standards and technical specific-ations for high-pressure common rail systems[2]. As a direct OEM replacement part, it perfectly matches the QSL series’ displacement range and power output, integrating smoothly with the engine’s high-pressure common rail fuel system and CM2250, CM2350 electronic control systems, making it a reliable replacement for c-ummins QSL9, QSL9.3 and QSC8.3 engine fuel injectors. This injector is a key component for medium-duty engine performance, widely applied in various working scenarios such as commercial vehicles (including Dongfeng), heavy-duty construction machinery, industrial equipment, light-duty mining machinery, and diesel trucks, which are typical applic-ation fields of QSL, QSC8.3, ISL9.5 and 6C8.3 engines. 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. It boasts high-pressure fuel delivery up to 1800 bar, combined with ultra-fine atomization via precision-machined 0.12mm spray holes and a 2μm plunger clearance—equivalent to 1/50 of a human hair—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 anti-wear alloy plunger and hardened stainless steel nozzle tip, effectively resists abrasion, corrosion from harsh fuels, and high-pressure impact, adhering to c-ummins’ strict production standards for reliable performance and longer service life. Constructed with premium heavy-duty steel and iron 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 and CE, ensuring reliable performance and consistent quality. With a comprehensive set of OEM cross reference numbers, it offers ready-to-ship inventory, customizable neutral packaging options, a 3-6 month warranty, and reliable after-sales support, with delivery available within 5-7 working days via DHL, FedEx, TNT or UPS, making it the ideal choice for maintaining the performance, efficiency, and longevity of c-ummins QSL series engines in various demanding commercial, industrial, and construction scenarios.