Caterpillar original 172-5780 Common Rail Diesel Fuel Injector for C9 Engine 330C 973C Excavator 10R-7224 235-2888 217-2570 new injector original new injector

The Caterpillar C-9 Fuel Injector 172-5780 is a high pressure common rail fuel injection component engineered for CAT C9 and C9 ACERT diesel engines. Designed to meet OEM specifications, this injector integrates seamlessly into heavy duty industrial diesel systems, delivering consistent fuel metering, optimized atomization, and stable rail pressure across demanding operating conditions found in construction, mining, marine propulsion, industrial power generation, oil and gas, agricultural, material handling, and heavy duty transportation applications.

Manufactured using heat treated alloy steel with precision machining to micron level tolerances, the 172-5780 injector incorporates advanced nozzle technology that produces a uniform spray pattern for efficient combustion. Its hardened alloy metallurgy provides superior thermal stability and corrosion resistance, allowing reliable performance during continuous heavy load operation. Each unit is factory bench tested to verify injector balance, flow rates, and sealing integrity, ensuring thousands of operating hours under proper maintenance schedules.

The 172-5780 is fully interchangeable with cross reference numbers 235-2888, 236-0962, 235-9649, 188-8739, 217-2570, and remanufacturing numbers 10R-7224 and 10R-7225, supporting flexible replacement sourcing for fleet operators and service facilities. Prior to installation, fuel lines should be cleaned, fuel filters replaced, and rail pressure verified, while new sealing washers and OEM torque values must be applied during fitting to prevent leakage and contamination.