The c-aterpillar 4336862 fuel injector is a high-precision, heavy-duty common rail injector exclusively developed for c-aterpillar C4.4 ACERT™ series diesel engines, adhering to c-aterpillar’s core principles of durability, efficiency, and strict quality control. As a reliable OE-grade aftermarket replacement part (consistent with OEM-certified quality standards), it is perfectly engineered to match the fuel system of C4.4 engines—compatible with industrial, engineering and construction variants of the C4.4 engine, which features a 4.4L displacement, 65.9-129.4kW power range, and meets the stringent China National IV emission standards, effectively reducing particulate matter emissions by nearly 90% and nitrogen oxide emissions by nearly 50% compared to previous standards. Constructed from high-quality heat-resistant high-speed steel with a reinforced anti-corrosion coating, it is designed to withstand the harshest working environments, including construction sites, mining areas, and industrial workshops, aligning with the C4.4 engine’s excellent adaptability to diverse harsh scenarios and its turbocharged aftercooled (TA) intake design. Adopting advanced electronic control common rail technology and c-aterpillar-approved nozzles (with a spray cone angle optimized for the C4.4 engine’s direct injection combustion system), it ensures ultra-precise fuel atomization and stable injection volume, effectively optimizing combustion efficiency, reducing fuel consumption by approximately 10% compared to conventional injectors, and cooperating with the C4.4 engine’s ECU to achieve precise injection control—critical for meeting low-emission requirements, even supporting some C4.4 engine variants that achieve efficient exhaust filtration without urea addition. This injector undergoes 100% factory testing, including high-pressure sealing detection, precision calibration, and durability verific-ation, fully complying with ISO 9001, Intertek certific-ation, and c-aterpillar OEM standards. It effectively solves common issues such as hard starting, white smoke, and power loss caused by injector wear, providing cost-effective and reliable support for global customers in construction, mining, and industrial fields, especially those pursuing green and low-emission operations. Flexible procurement terms and professional technical support further enhance its practicality, making it an ideal choice for maintaining the stable operation of c-aterpillar C4.4-equipped equipment.

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