original 20R-8069 Common Rail Diesel Fuel Injector Assembly for C7 C9 Engine Excavator 324D 325D 329D E330D E336D 557-7634 557-7637 10R-9003 20R-8846 original new injector

Engineered for demanding heavy-duty diesel operations, the 20R-8069 Fuel Injector delivers OEM-equivalent performance for C9 and C9 ACERT engine platforms. This Electronic Unit Injector (EUI) is precision manufactured to match original specifications, ensuring dependable service in Industrial C9, Marine C9, and Generator Set C9 applications. Cross references include 0R-8069, 10R-7672, 10R-8070, 239-1048, 236-0962, 254-4339, 387-9433, 328-2575, 293-4072, and 293-4069, providing broad interchangeability for global B2B buyers and aftermarket distributors.

The injector features heat treated internal components, a precision ground nozzle, corrosion resistant steel construction, wear resistant surfaces, a high strength spring system, and OEM grade sealing components. Functional advantages include high pressure fuel delivery, superior fuel atomization, reduced fuel consumption, increased engine efficiency, improved cold start performance, enhanced power output, lower exhaust emissions, and stable idle operation. Expected service life ranges from 8,000 to 15,000 operating hours under proper maintenance. Typical applications cover 330D, 336D, 336DL, and 345D excavators, wheel loaders, dozers, generator sets, and industrial power units.

Pre-installation requires verifying the injector part number and engine serial number, cleaning the injector bore, replacing sealing washers, and inspecting fuel lines and harness connections. Installation involves cylinder head seat cleaning, torque to OEM specification, electrical connection, fuel system bleeding, and injector calibration when required. Recommended practices include using high-quality diesel fuel, regular filter replacement, contamination control, and scheduled seal inspection.