CUMMINS Factory QSK23 Excavator 4902828 4902827 4326780 3766446 4326781 4088428 4928346 4076533 Engine Common Rail Injector Original New Injector

The 4076533 fuel injector is a premium OEM-grade common rail component exclusively engineered for c-ummins QSK23 series diesel engines, also compatible with other related heavy-duty engine models as a direct replacement part[superscript:1][superscript:3]. As a core component of the high-pressure injection system, it perfectly matches the QSK23’s 23L displacement and 760-950 HP power range, tailored for harsh heavy-duty applic-ations including construction machinery, mining, and other industrial scenarios where reliability and durability are critical[superscript:1]. This injector adopts advanced electronic control technology, functioning as a normally closed valve that opens precisely when receiving signals from the engine’s ECU, ensuring accurate fuel delivery[superscript:2]. It features high-pressure fuel delivery up to 1800 bar (26108 psi), combined with ultra-fine atomization (≤37 microns) — leveraging precision-machined spray holes (0.12mm in diameter) to guarantee uniform fuel distribution[superscript:4], effectively reducing exhaust emissions to meet US EPA Tier II and EU Stage IIIA standards, while improving fuel economy by 7-10% compared to conventional injectors. Equipped with an ultra-fast responding solenoid (opening/closing time <0.1ms), it enables precise multi-stage injection (pre-injection, main injection, post-injection) to optimize combustion efficiency, minimize engine noise and vibration, and extend the engine’s service life significantly[superscript:4]. Constructed with premium wear-resistant materials that meet strict c-ummins quality standards[superscript:2], including heat-treated high-strength alloy steel for the body, tungsten carbide-coated nozzle tip (HRC71) for enhanced durability, high-temperature resistant copper solenoid coil, and Viton fluoroelastomer seals to ensure effective oil-fuel separation, this injector boasts excellent adaptability to extreme temperatures (-40°C to 168°C) and harsh working environments. Every unit undergoes strict factory testing, including pressure calibration, flow measurement, spray pattern validation, and leakage checks, to ensure perfect compatibility with c-ummins QSK23 engine control systems and direct replacement for original parts[superscript:2]. With a comprehensive set of OEM cross reference numbers, it offers hassle-free installation (adjusted by torque method per c-ummins PT fuel system specific-ations)[superscript:8] and reliable after-sales support, making it the ideal choice for maintaining the performance, efficiency, and longevity of c-ummins QSK23 series engines in demanding industrial scenarios.