Caterpillar original  242-0857 Common Rail Diesel Fuel Injector for C9 Engine 330D 336D Excavator Replacement for OEM original new injector

The Caterpillar CAT C9 Fuel Injector 242-0857 is a high-performance diesel fuel injection component engineered for Caterpillar C9 engine platforms, including the C9 ACERT, C9 Industrial, C9 Marine, and C9 Generator Set configurations. Manufactured to original equipment specifications, this HEUI injector is constructed from high strength alloy steel to withstand the extreme pressures and high-cycle operating conditions found in heavy-duty diesel applications such as the CAT 330D and CAT 336D power plants.

This unit provides precise fuel metering and optimized atomization, resulting in improved combustion efficiency, reduced fuel consumption, and enhanced overall engine reliability. Its OEM direct fit installation design allows for straightforward replacement without modification, minimizing equipment downtime in demanding field operations. The injector is produced under ISO9001 quality standards, ensuring consistent dimensional accuracy, material integrity, and dependable performance across the full operating range.

The 242-0857 fuel injector carries broad cross-reference compatibility with numerous Caterpillar part numbers, making it a versatile replacement solution for excavators, loaders, mining trucks, marine workboats, large agricultural tractors, and diesel generator sets. With the authorized OE references listed, fleet operators and service workshops can confidently source a reliable remanufactured or OEM replacement injector to restore rated engine power, maintain emission performance, and extend the service life of Caterpillar C9 powered equipment in construction, mining, oil and gas, marine, agricultural, and power generation industries.