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

Engineered exclusively for Caterpillar C9 and C9 ACERT diesel engine platforms, the 10R-7225 fuel injector is a genuine OEM remanufactured fuel system component built to match strict Caterpillar performance specifications. It serves as a direct replacement for cross-referenced part numbers 249-0713, 387-9433 and 387-9434, with both hyphenated and non-hyphenated formats supported for ordering. Compatibility covers all six C9 engine variants, and buyers must verify fitment against their engine serial number and emissions configuration before purchase.
As an electronically controlled high-pressure common rail injector, the 10R-7225 relies on engine operating data received by the ECM to calculate precise injection timing and fuel metering for each engine cycle. Its precision nozzle atomizes high-pressure fuel before direct spraying into the combustion chamber, optimizing combustion efficiency to reduce fuel consumption, cut exhaust emissions and minimize black smoke. Wear-resistant internal components deliver stable fuel delivery, improved engine response, higher power output and extended engine service life even under extreme operating conditions.
Manufactured and tested to Caterpillar OEM quality standards, the 10R-7225 supports heavy-duty applications across construction, mining, power generation, industrial, marine and agricultural sectors, with common fitment on CAT 330D/336D excavators, 966H/972H wheel loaders and generator sets. For fleet and maintenance teams, it reduces unplanned downtime, lowers long-term maintenance costs and extends service intervals. Installation must follow Caterpillar service manual procedures, with OEM sealing kits used and ECM calibration performed as required.