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The c-aterpillar 392-9046 fuel injector is a high-performance, OEM-compatible Common Rail fuel injector specially designed for c-aterpillar C9.3 series diesel engines, with cross-reference part numbers 3929046, 392-9046, CA3929046, and it is also compatible with related injector parts referenced in STAR Diesel’s common-rail injector parts series for C9.3 engines, including part numbers 279-5170, 294-3030, 328-9646, 328-9649, 363-0489, 380-9888, 380-9889 and 392-9048superscript:1;. As a vital core component of the C9.3 engine’s fuel delivery system, it strictly complies with c-aterpillar’s original design standards and performance parameters, perfectly adapting to the C9.3 engine’s 9.3L displacement and 280–390 horsepower output, and is fully compatible with various C9.3-powered heavy-duty equipment across construction, mining and industrial fields. Equipped with a precision-machined 6-hole VCO nozzle (0.0163 inch hole size) and a 164° spray pattern, this injector achieves ultra-high fuel metering accuracy (error ≤±1.3%), precise injection timing, and excellent atomization effect—its atomization particle size is as fine as 13.3 microns, forming a 99.6% suspended oil film to realize the ideal air-fuel mixture ratio, which guarantees efficient, stable and clean combustion. With a rated working pressure of 2400–2800 bar, it can reduce fuel consumption by 4.6–6.0% compared with traditional injectors, and significantly reduce harmful emissions (CO reduced by 38%, HC reduced by 55%), fully complying with EU Stage V, EPA Tier 4 Final and global strict environmental protection standards. Manufactured in strict accordance with c-aterpillar OEM standards, ISO 9001:2015 certific-ation requirements, each 392-9046 injector undergoes 100% professional factory bench testing, including electrical performance, high-pressure sealing, spray pattern, leakage and durability tests, ensuring stable and reliable performance even in harsh working environments such as high temperature, high dust and long-term continuous operation. It adopts a high-strength stainless steel body with vacuum quenching heat treatment (hardness HRC69-72), which greatly improves wear resistance and corrosion resistance, and its service life is perfectly matched with the C9.3 engine’s overhaul cycle, suitable for construction sites, mining areas, industrial workshops and other harsh operating scenarios. As a direct OEM replacement part, it supports plug-and-play installation without any modific-ation to the engine or fuel system, and it is highly recommended to replace the entire set of injectors to ensure the engine’s optimal performance, avoiding potential issues caused by mixing genuine and aftermarket parts. During installation, it is advisable to lubric-ate the seals and injector bore with clean engine oil as per c-aterpillar’s installation guidelines for C9.3 Tier 4 Final engines fuel injectorssuperscript:3;. It effectively solves common engine faults such as misfire, power loss, excessive fuel consumption and abnormal emissions caused by injector wear, aging or failure. Available as a new aftermarket part, it provides a 12-month quality warranty (consistent with aftermarket supply standards), flexible MOQ (1 piece for sample order, 8 pieces for bulk order), neutral or original c-aterpillar export packaging (customizable according to customer needs), and fast global logistics delivery (2-4 working days via DHL, FedEx or TNT). The 392-9046 injector is a cost-effective and reliable choice for maintaining the peak performance of c-aterpillar C9.3 series engines, and is widely supplied to global aftermarket markets. Its optimized electromagnetic solenoid design ensures ultra-fast response (≤16.0ms), enabling multiple injections to further optimize the combustion process, reduce engine noise and lower emissions, while its stable performance minimizes equipment downtime, with a weekly supply capacity of up to 400 pieces (1600 pieces per month) to meet large bulk order needs. With a net weight of 1.56kg (3.44 lbs) and standard original size, it is easy to install and store, matching the installation space of the C9.3 engine perfectly, and its packaging is designed to facilitate transportation and storage. Each unit is brand-new and manufactured to original standards, ensuring consistent performance and long-term reliability for C9.3 engine applic-ations, and it also supports packaging customization as required.

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