Caterpillar original Diesel Common Rail Fuel Injector C-9 Engine 172-5780 217-2570 Cross Reference 235-9649 Replacement for OEM 10R-7224 for Excavator Loader E330C 330C 330C L original new injector

For industrial parts suppliers, heavy equipment fleet operators and maintenance providers, the CAT 172-5780 original common rail diesel fuel injector serves as a direct-fit replacement component for the full Caterpillar C9 and C9 ACERT engine family. As an OEM-spec part, it carries full cross-compatibility with interchange numbers 235-2888, 236-0962, 235-9649, 188-8739 and 217-2570, as well as remanufactured part numbers 10R-7224 and 10R-7225, eliminating sourcing friction for global supply chains.

Each 172-5780 injector is precision-machined to micron-level tolerances using heat-treated hardened alloy steel, with optimized nozzle geometry, hardened control valves and factory-calibrated metering systems to support stable high-pressure fuel atomization. The electronically controlled design works in tandem with the engine ECM to deliver precisely timed fuel doses, supporting efficient combustion, consistent power output, reduced fuel consumption, lower exhaust emissions and reliable performance under continuous heavy-load operation.

Engineered for harsh operating environments, the injector is validated for use across construction, mining, marine propulsion, industrial power generation, oil and gas, agriculture, material handling and heavy-duty transportation applications. Every unit undergoes factory bench testing and calibration prior to distribution, and follows standardized installation and maintenance protocols to deliver thousands of hours of service life when paired with proper routine upkeep.