Caterpillar original Common Rail Diesel Fuel Injector 170-5252 for CAT C12 C10 Engine Excavator Truck 203-3464 229-5918 0R-4987 187-6549 208-9160 317-5279 original new injector

The Caterpillar C12 Fuel Injector 170-5252 is engineered as a direct OEM replacement for Caterpillar C12 diesel engines operating across heavy-duty trucking, construction equipment, marine propulsion, power generation, and mining machinery. Manufactured to original equipment specifications, this injector assembly delivers precise fuel metering and stable injection pressure, ensuring optimal combustion efficiency under demanding industrial workloads. It replaces original part numbers 10R-0955, 0R-8479, and CAT1705252, providing a reliable fit and function for service, overhaul, and fleet maintenance operations.

Constructed from high-durability materials with advanced corrosion-resistant treatment, the 170-5252 injector ensures long service life even when exposed to harsh operating environments and variable fuel quality. Its precision-machined nozzle enhances atomization efficiency, supporting clean combustion, reduced smoke output, and consistent power delivery. Stable injection pressure and balanced fuel distribution help minimize vibration, lower exhaust emissions, and maintain engine responsiveness across the full operating range.

For maximum performance and longevity, operators should use high-quality diesel fuel, replace fuel filters at recommended intervals, monitor fuel system pressure regularly, and avoid contaminated or water-laden fuel supplies. Adhering to scheduled Caterpillar maintenance procedures ensures the injector continues to deliver consistent fuel delivery, reliable cold-start capability, and dependable operation in mission-critical industrial and marine applications.