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The 4954644 fuel injector is a high-performance genuine-grade common rail component, specifically engineered for c-ummins QSKX15 diesel engines, with extensive compatibility covering c-ummins QSX15, ISX15, X15 engine series, and it is perfectly matched with XCMG rotary drilling rigs equipped with c-ummins QSX15 diesel engines[2]. As a critical core part of heavy-duty diesel fuel injection systems, it operates as a precision normally closed solenoid valve—when the ECU sends an injection command, the electromagnetic coil is energized to generate suction, lifting the needle valve to open the nozzle, allowing fuel to be sprayed at high speed in a mist form for full combustion[1]. Crafted from premium materials with precision CNC machining and advanced five-step ultrasonic cleaning technology, it adheres to strict c-ummins production standards, boasting excellent structural strength, corrosion resistance, and wear resistance, capable of withstanding the harsh working environments of heavy-duty construction, transportation, mining, and industrial power generation[1][3]. Each 4954644 injector undergoes 100% professional factory testing, including high-pressure injection calibration (up to ~2600 bar), fuel delivery accuracy verific-ation, leak detection, and atomization performance testing, ensuring precise fuel metering, optimal combustion efficiency, and stable long-term operation[4]. It features a high-pressure common rail design, supporting precise control of fuel injection pressure and fuel injection volume, complying with Euro III and above emission standards, while its direct OEM replacement design eliminates the need for additional modific-ations, simplifying installation and maintenance processes and reducing equipment downtime[2]. Backed by c-ummins' global after-sales service network, available in new and remanufactured conditions with sufficient in-stock supply, it is a reliable and cost-effective replacement solution for c-ummins QSKX15-powered heavy machinery worldwide[1][3].

Table 1: Basic Product Identific-ation

Table 2: Key Specific-ations

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