Caterpillar original Diesel Fuel Injector Nozzle 10R-7223 387-9432 OEM Replacement 266-4446 328-2576 for Caterpillar C9 330D L Excavator Fuel System original new injector

For B2B buyers including heavy equipment parts distributors, fleet maintenance teams and industrial engine service providers, the CAT 10R-7223 Diesel Fuel Injector is a precision-manufactured direct replacement component engineered exclusively for Caterpillar C9 and C9 ACERT engine platforms. Built to meet OEM-equivalent quality standards, this brand-new electronic unit injector is a validated cross-reference replacement for 326-4701, 326-4702 and 326-4703 part numbers, fitting all standard C9 engine configurations for construction, industrial, generator and marine use cases.

As a high-pressure electronically controlled common rail injection component, the 10R-7223 operates via solenoid activation to lift its precision needle valve, atomizing fuel through multi-hole nozzle tips for optimal air-fuel mixing in the combustion chamber. Its hardened alloy steel internal components and corrosion-resistant surface treatment deliver precise fuel metering under variable load conditions, supporting improved combustion efficiency, lower fuel consumption, reduced exhaust emissions, enhanced throttle response and extended engine service life even in severe operating environments.

This injector is compatible with a wide range of Caterpillar heavy equipment, including 330D/336D/345D excavators, 966H/972H/980H wheel loaders, 140M/160M motor graders, generator sets, marine engines, industrial power units and mining machinery, serving global construction, mining, power generation, marine and industrial sectors. It comes with a 12-month warranty, and adherence to official installation and maintenance guidelines is recommended to preserve optimal long-term performance.