Caterpillar original 4336862 Common Rail Diesel Fuel Injector 295050-2400 for C7.1 Engine 320 323 326 Excavator Replacement for OEM new injector original new injector

The CAT C4.4 Fuel Injector 4336862 (433-6862), cross-referenced as 295050-2400 / 2950502400, is an OEM original replacement common rail diesel injector engineered for Caterpillar C4.4, C4.2, and C7.1 diesel engines. It serves as a critical fuel injection system component across construction equipment such as excavators, loaders, backhoes, and compact machinery, as well as mining auxiliary equipment, agricultural tractors and harvesting machinery, standby and prime power generators, and industrial compressor, pump, and hydraulic power pack systems. The injector operates within a high pressure common rail range from 300 bar to over 2,500 bar, delivering precise atomization and consistent fuel metering for optimized combustion.

Manufactured through high-precision CNC machining, this CAT diesel injector meets OEM-level quality standards with strict dimensional tolerances. It is constructed from heat-treated alloy steel and corrosion-resistant materials, while the nozzle components feature advanced wear-resistant surfaces for extended service life. The precision atomization design improves combustion efficiency, enhances engine power output, and reduces overall fuel consumption. Reliable fuel metering ensures consistent injection quantity and stable fuel flow under demanding operating conditions, supporting stable performance in heavy equipment, generator sets, and industrial engine applications worldwide.

For optimal maintenance, the fuel injector requires regular inspection intervals, the use of clean diesel fuel, routine replacement of fuel filters, and periodic draining of water separators to avoid contamination-related damage. Operators should monitor engine fault codes and address symptoms such as hard starting, black or white smoke, power loss, excess fuel consumption, or rough idle promptly, as these may indicate injector leakage, nozzle wear, clogging, or injection timing irregularities that require professional attention.