original 10R-7674 Common Rail Fuel Injector 320-0680 2645A749 for C6.4 C6.6 Engine E320D 320D Excavator Diesel Fuel Injector Inyector original new injector

Engineered for demanding diesel powertrain applications, the 10R-7674 fuel injector delivers precision-controlled fuel atomization required by modern C6 series engines. This OEM-grade injection nozzle assembly is manufactured to strict dimensional and performance tolerances, ensuring reliable operation across excavators, wheel loaders, backhoe loaders, motor graders, marine propulsion systems, and stationary generator sets. Each unit is 100% factory performance tested to verify accurate spray patterns, sealing integrity, and consistent injection pressure before shipment.

Cross-referenced with authorized part numbers 10R-7674, 326-4700, 320-0680, and 2645A749, this component is a direct replacement for original equipment fitted to C6 and C6.4 inline 6-cylinder water-cooled diesel engines. Key performance attributes include precise fuel metering, improved combustion efficiency, reduced fuel consumption, lower exhaust emissions, increased engine power output, and reduced operating noise. Robust internal geometry and premium alloy construction provide excellent thermal stability and extended service life under heavy-duty industrial, construction, and mining workloads.

Correct installation preserves long-term reliability: verify the injector part number, inspect fuel rail cleanliness, disconnect the battery, remove the old injector, clean the injector bore, fit a new sealing washer, apply the specified torque, reconnect fuel lines, and perform injector coding if required. Following the service manual and using clean high-quality diesel fuel prevents contamination-related issues such as white smoke, black smoke, or power loss.