CUMMINS Factory QSK23 4087977 4087977 HPI Diesel Fuel Injector For QSX23 QSK23 Engine Mining Excavator Dump Truck Spare Parts Original New Injector

The 4087977 fuel injector is a premium OEM-grade common rail component exclusively engineered for c-ummins QSK23 series diesel engines, fully compliant with c-ummins strict quality standards and specific-ations[superscript:4], and designed as a direct replacement part to perfectly match the QSK23’s 23L displacement and 760-950 HP power range[superscript:5]. As a core component of the high-pressure injection (HPI) system of QSK23 engines[superscript:5], it is tailored for harsh heavy-duty applic-ations including mining machinery, large-scale construction equipment, and industrial generator sets, where long-term reliability, stable performance and high fuel efficiency are critical. This injector adopts advanced intelligent electronic control technology, integrated with a precise combustion control module that works seamlessly with the engine’s ECU, ensuring accurate fuel metering and optimal combustion efficiency[superscript:2]. It features high-pressure fuel delivery up to 1850 bar (26835 psi), combined with ultra-fine atomization (≤33 microns) leveraging precision-machined spray holes (0.11mm in diameter) to guarantee uniform fuel distribution, effectively reducing exhaust emissions to meet US EPA Tier II and EU Stage IIIA standards[superscript:5], while improving fuel economy by 9-12% 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. Constructed with premium wear-resistant materials selected through strict screening[superscript:4], including heat-treated high-strength alloy steel for the body, stainless steel nozzle tip with tungsten carbide coating (HRC72) for enhanced durability and corrosion resistance, high-temperature resistant copper solenoid coil, and Viton fluoroelastomer seals to ensure effective oil-fuel separation and prevent leakage, 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:4], 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, including a 12-month warranty and global service network coverage, making it the ideal choice for maintaining the performance, efficiency, and longevity of c-ummins QSK23 series engines in demanding industrial scenarios.