Caterpillar original Common Rail Fuel Injector 20R-8064 for C9 Diesel Engine, Replacement for OEM, 557-7633, 387-9433, fits Excavator Construction Machinery Equipment 330D 336D original new injector

Designed to meet the fueling demands of Caterpillar C9 engine platforms, the 20R-8064 common rail fuel injector delivers electronically controlled, high-precision diesel injection for construction, mining, power generation, and industrial applications. Manufactured in accordance with OEM specifications and industrial durability standards, this injector serves as a direct replacement for reference number 320-8064 and interchange numbers 10R-8056, 10R-8055, and 10R-8057, ensuring seamless fitment across CAT C9, C9 ACERT, and C9.3 engine series.

Operating within a high-pressure common rail system, the injector achieves accurate fuel metering and optimized atomization through a laser-calibrated, multi-hole nozzle assembly with CNC-machined components and micron-level tolerance control. Hardened internal parts, corrosion-resistant steel, and wear-resistant surfaces provide the durability required for extended service intervals in harsh working environments. The result is stable combustion efficiency that supports improved fuel economy, increased power output, reduced exhaust emissions, lower noise and vibration, and enhanced cold-start performance—helping fleet operators reduce overall operating costs.

The 20R-8064 is compatible with a wide range of Caterpillar machinery, including 320D, 325D, 330D, and 336D excavators as well as 950H and 966H wheel loaders, alongside generator sets, marine auxiliary power systems, and other heavy-duty off-highway equipment. Supported by a comprehensive cross-reference database and global aftermarket availability, this injector is a dependable sourcing solution for distributors, repair shops, and equipment owners across North America, Europe, South America, the Middle East, Africa, Australia, and Asia-Pacific.