CUMMINS Factory QSK23 Reconditioned QSK23 Diesel Engine Fuel Injector 4077076 4062090 4902827 Original New Injector

The 4077076 fuel injector is a high-performance OEM-grade common rail component exclusively engineered for c-ummins QSK23 series diesel engines, also compatible with Komatsu SAA6D170E-3 engines as a direct replacement part[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 mining, oil & gas, and large-scale construction machinery where reliability and durability are critical. 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 and optimal combustion efficiency[superscript:2]. It features high-pressure fuel delivery up to 1900 bar (27558 psi) — within the 1600-2600 bar range of c-ummins common rail injectors[superscript:5] — combined with ultra-fine atomization (≤36 microns) leveraging precision-machined spray holes (0.12mm in diameter) to guarantee uniform fuel distribution[superscript:7], effectively reducing exhaust emissions to meet US EPA Tier II and EU Stage IIIA standards, while improving fuel economy by 8-11% compared to conventional injectors. Equipped with an ultra-fast responding solenoid (opening/closing time <0.1ms)[superscript:7], 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. 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[superscript:8], stainless steel nozzle tip with tungsten carbide coating (HRC72) for enhanced durability[superscript:1][superscript:4], 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 170°C) and harsh working environments. Every unit undergoes strict factory testing, including pressure calibration, flow measurement, spray pattern validation, and leakage checks[superscript:2], to ensure perfect compatibility with c-ummins QSK23 engine control systems and direct replacement for original parts. 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) and reliable after-sales support, making it the ideal choice for maintaining the performance, efficiency, and longevity of c-ummins QSK23 series engines and compatible equipment in demanding industrial scenarios.