original 0R-3420 Pencil Fuel Injector Nozzle 4W-7016 0R-1743 Diesel Injector for 3208 Engine Replacement for OEM Fuel Injection Nozzle Assy original new injector

Engineered for demanding heavy-duty diesel applications, the 0R-3420 Injector Nozzle delivers OEM-equivalent performance for C7, C9, and C10 inline six-cylinder diesel engines. Cross-referenced with 10R-3420, 7W-3420, and 3R-3420, this fuel injector nozzle assembly is a critical replacement component for construction, mining, marine, agricultural, and power generation equipment operating under sustained high-pressure conditions.

Manufactured from high-strength alloy steel using advanced CNC machining and precision grinding processes, the 0R-3420 nozzle offers superior wear resistance, extended service life, and dependable performance in extreme operating environments. Its consistent spray pattern ensures uniform fuel atomization, directly contributing to improved combustion efficiency, reduced fuel consumption, and lower emissions. Protective surface treatments provide corrosion resistance against fuel contaminants, while the high-pressure capable design supports modern diesel injection systems used in excavators, wheel loaders, mining trucks, marine auxiliary engines, and prime power generator sets.

Before installation, verify the injector assembly number and engine serial number, inspect the injector bore, replace damaged sealing components, and confirm fuel system cleanliness. Follow service manual procedures, apply calibrated torque values, prime the fuel system, and conduct leak testing after fitment. This 0R-3420 nozzle effectively addresses hard starting, excessive smoke, and increased fuel consumption caused by nozzle wear, carbon deposits, or poor atomization, making it a reliable global aftermarket solution for industrial diesel fleets.