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The c-aterpillar Injector Nozzle 4W7018 is a heavy-duty core component specially engineered for c-aterpillar 3400 series (3406, 3406B, 3406C, 3408, 3412) and 3208 diesel engines, serving as a critical part of the fuel injection system to regulate precise fuel delivery into the combustion chamber. This nozzle is designed with ultra-precise needle-to-body gap and hydraulic grinding technology, ensuring exceptional fuel atomization and accurate fuel delivery, which optimizes combustion efficiency, reduces fuel consumption and exhaust emissions, and is compatible with low-sulfur fuels. Manufactured with high-speed steel (W6Mo5Cr4V2, 18CrNi8) and processed by vacuum hardening, it achieves a rigidity of HRC 62-65, boasting superior wear resistance and durability, capable of withstanding the harsh working conditions of heavy-duty equipment such as cold milling machines, wheeled bulldozers, and non-road trucks. Fully compliant with OEM standards, its comprehensive OEM cross reference numbers (including 4W7018, 0R-1745, 0R-3422, etc.) ensure direct and perfect replacement for original parts without any modific-ations. Each nozzle undergoes strict 3-step factory inspection, covering precision, leakage, and high-temperature resistance, guaranteeing stable and reliable operation over a long service life. With a compact size (7.5" L x 1" W x 1") and lightweight design (0.28kg), it is easy to install and maintain, effectively reducing equipment downtime and operating costs for users. Backed by a 12-month warranty and ISO 9001:2015, AAR M-1003 certific-ations, this nozzle is the ideal choice for repairing or rebuilding c-aterpillar diesel engines, delivering consistent performance and long-term reliability.

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