original Excavator diesel Engine Injectors 376-0509 392-0217 177-9192 386-1757 Construction Machinery Parts original new injector

Engineered for demanding heavy-duty operations, the 392-0217 fuel injector is a high-precision component designed for 3512B series diesel engines and closely related 3508B and 3516B platforms. Built to OEM and remanufactured standards, this injector features precision-engineered nozzle technology that ensures consistent fuel atomization, reduced carbon buildup, and optimized combustion efficiency. Cross-referenced OE numbers include 20R-1278, 10R-3255, 386-1769, 230-9457, 11R-0286, 10R-7220, 10R-7220B, and 0R-3539, giving procurement teams broad sourcing flexibility.

Manufactured from wear- and corrosion-resistant alloy steel with specialized surface coatings, the injector withstands operating pressures up to 160 MPa while maintaining a flow rate of 300-400 cc/min with injection accuracy of ±0.5%. This precision reduces unburned hydrocarbons and soot emissions, maximizes fuel efficiency, and delivers stable engine output across diverse duty cycles. Typical deployments include industrial power stations, marine auxiliary units, mining and construction site power, oil and gas pumping/compression engines, grid and telecom backup modules, and rental power fleets serving North America, Europe, the Middle East, Africa, Asia-Pacific, and Latin America.

For optimal service life, inspect injectors every 500 operating hours for leakage at the body, nozzle, and fuel lines. Torque hold-down bolts to 35-45 Nm, replace seals and copper washers, and calibrate electronic units with authorized diagnostic tools. Replace injectors when excessive smoke, engine roughness, misfire, or power loss occurs.