Caterpillar original 10R-7225 387-9427 263-8218 328-2585 Common Rail Diesel Fuel Injector Replacement for CAT C-9 Diesel Systems, for heavy duty diesel engine application original new injector

Built to align with Caterpillar’s strict fuel system specifications, the 10R-7225 is an OEM remanufactured diesel fuel injector purpose-engineered for the full CAT C9 and C9 ACERT engine family. It fits all verified C9 variants, including industrial, generator, marine, and power unit configurations, and cross-references to part numbers 249-0713, 387-9433, and 387-9434 in both hyphenated and continuous formats. Fitment varies by engine serial number and emissions configuration, so pre-order verification with official engine documentation is recommended.

As an electronically controlled high-pressure injector, it operates in tandem with the engine’s ECM to calculate optimal injection timing, energize the injector solenoid, and deliver precisely atomized fuel directly into the combustion chamber. This precision improves combustion efficiency, sharpens engine response, reduces black smoke output, lowers fuel consumption, and cuts exhaust emissions. Wear-resistant internal components and OEM-standard testing ensure stable fuel delivery and reliable performance under extreme heavy-duty conditions, while extending overall engine service life.

The injector is compatible with a wide range of CAT heavy equipment, including 330D and 336D excavators, 966H and 972H wheel loaders, generator sets, and industrial and marine power units. It serves construction, mining, power generation, industrial, marine, and agricultural sectors across global markets, delivering fleet owners reduced downtime, OEM-level reliability, lower maintenance costs, improved productivity, and global service compatibility.