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The c-aterpillar 155-1819 fuel injector is a high-performance, OEM-compatible common rail component specifically engineered for c-aterpillar C9.3 series diesel engines, with cross-reference part numbers 1551819, 155-1819, OR9348, and 118-1328. As a critical core component of the C9.3 engine’s fuel delivery system, it adopts advanced Common Rail Direct Injection (CRDI) technology, fully complying with c-aterpillar’s original design standards and performance parameters, while also maintaining compatibility with c-aterpillar 3126B series engines for expanded applic-ation scenarios. Optimized for the C9.3 engine’s 9.3L displacement and 270–390 horsepower output, this injector is equipped with a precision-machined 5-hole SAC nozzle (0.014 inch hole size) with a 155° spray pattern, delivering ultra-accurate fuel metering, precise injection timing, and superior atomization effect. With a rated pressure of 2000–2400 bar, it ensures efficient, stable, and clean combustion, effectively reducing fuel consumption and minimizing harmful emissions to meet global environmental standards. Manufactured in strict compliance with c-aterpillar OEM standards, ISO 9001 certific-ation requirements, each unit undergoes 100% professional factory bench testing, including high-pressure performance verific-ation, spray pattern detection, and strict sealing inspection, ensuring reliable performance and consistent quality even in the harshest heavy-duty working conditions. It features a high-strength steel body with vacuum quenching heat treatment (hardness HRC62-65), enhancing wear resistance and service life, which can perfectly match the C9.3 engine’s overhaul cycle and adapt to harsh operating environments such as construction sites, mining areas, and industrial workshops. As a direct OEM replacement part, it supports plug-and-play installation without any modific-ations to the engine or fuel system, effectively solving common engine problems such as misfires, power loss, excessive fuel consumption, and abnormal emissions caused by injector wear, aging or failure. Available as a new aftermarket part with a 6-month quality warranty, flexible MOQ (6 pieces minimum, negotiable), neutral export packaging (customizable according to customer requirements), and fast global logistics delivery (3-7 working days), the 155-1819 injector is a cost-effective and reliable choice for maintaining the peak performance of c-aterpillar C9.3 series engines, widely supplied to global aftermarket markets and compatible with a variety of C9.3-powered heavy equipment. Its optimized solenoid control ensures fast response (millisecond level), enabling multiple injections to further optimize combustion process and reduce emissions.

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