c-ummins Injector QSK15 Series (Part Number: 1521978) Product Details

The c-ummins 1521978 fuel injector is a premium OEM-equivalent replacement component specifically designed for the c-ummins QSK15 15L heavy-duty diesel engine series, boasting full compatibility with QSX15, ISX15 diesel engines and heavy-duty equipment powered by these engine models, including fracturing trucks and mining vehicles. It stands out with its enhanced sealing performance, ultra-precise fuel injection, exceptional high-temperature resistance, and strict compliance with global emission and quality standards, making it the preferred choice for harsh working environments such as mining sites, construction zones, industrial power plants, and heavy-duty transport fleets. As a high-end common rail fuel injector assembly, it adopts high-strength low-carbon alloy steel (compliant with GB/T 3077-1999 standard) for the body and high-precision hardened stainless steel for the nozzle, combined with advanced laser drilling and CNC machining technology, ensuring all core components meet c-ummins’ global technical specifications and strict production norms. The 1521978 injector delivers uniform and ultra-fine fuel atomization, promoting complete combustion, which effectively reduces fuel consumption and harmful emissions to meet EPA Tier 4, Euro VI, ISO 9001 and TS 16949 certification requirements. It strictly follows c-ummins CES 20081/20082 fuel requirements, adapting to fuel with cleanliness up to ISO 4406 Class 18/15/12 and water content ≤0.05%. With an OEM-standard size (26.1cm*12.5cm*5.8cm) and a gross weight of 1.6KG, it enables seamless bolt-on installation without additional modifications, while its reinforced anti-corrosion, anti-carbon-deposit, and anti-vibration structures further enhance adaptability to extreme working conditions. Backed by a 12-month quality warranty, in-stock availability, and 5-10 days of global delivery, this injector provides cost-effective and reliable support for maintaining the optimal operation of QSK15-powered equipment. Based on industry supply chain data and product compatibility verification, the OEM Cross-Reference Numbers for 1521978 include 5258810, 4954913, 1764367, 4088668, 5634704, which are fully interchangeable with the original QSK15/QSX15/ISX15 fuel system, ensuring perfect fit and hassle-free replacement. Its optimized electromagnetic control design ensures stable fuel supply even under high-pressure and high-load conditions, allowing the engine to maintain an optimal air-fuel ratio in any working state, ensuring smooth operation and long service life.

1. Core Technical Specifications (1521978)

2. Compatible Equipment & Application Scenarios

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