original 250-1306 Diesel Fuel Injector for 3508B 3512B 3516B PM3508B PM3516B Engine Common Rail Injector 2501306 3920206 392-0206 20R-1270 Excavator Parts original new injector

Engineered for demanding continuous-duty operations, the 250-1306 diesel fuel injector delivers OEM-grade performance for 3500 Series engines including 3512B, 3512C, 3516B, 3516C, 3508B, and 3508C platforms. Cross-referenced with 326-1643, 10R-7222, 317-7630, and 341-9876, this injection nozzle assembly serves as a direct-fit replacement for industrial power generation, marine propulsion, mining, oil & gas, and heavy construction applications worldwide.

Manufactured through high-precision CNC machining from hardened alloy steel, this injector offers exceptional wear resistance, corrosion resistance, high-temperature stability, and fatigue endurance. OEM-level calibration ensures precise fuel atomization and delivery volume, resulting in improved combustion efficiency, lower fuel consumption, reduced emissions, increased engine output, enhanced cold-start reliability, and stable idle operation. Each unit is bench-tested to verify spray pattern, injection pressure, and leakage tolerance before shipment, supporting extended service intervals in mission-critical generator sets and marine propulsion systems.

Installation requires part number verification, cleaning of the injector bore, replacement of sealing washers, and torque tightening to OEM specifications, followed by fuel system bleeding and leak inspection. Recommended maintenance includes regular fuel filter replacement, water separator drainage, use of high-quality clean diesel, and periodic injector bench testing to prevent hard starting, black or white smoke, excessive fuel consumption, and rough idle. Supplied brand new with a 12-month warranty, ideal for North American, European, Middle Eastern, African, Asia Pacific, and South American markets.