Cummins original 3074225 PT Fuel Injector for K19 Engine Mining Excavator Truck Diesel Fuel Injector Replacement for OEM 3016675 3047964 original new injector

The Cummins PT fuel injector 3074225 is a direct OEM replacement designed for the N14, N14 Celect, N14 Celect Plus, NT855, and NTA855 engine families. It serves as the critical component in the pressure-time (PT) fuel system, delivering precise fuel metering and atomization for heavy-duty trucks, marine vessels, generator sets, and mining or construction equipment. This injector cross-references multiple OE numbers including 3074225RX, 3074225R, 3074225PX, 3073995, 3081314, 3081315, 3411760, 3411761, 3411767, 3652541, 3652542, and others, ensuring broad compatibility and simplified inventory management.

Manufactured with precision nozzle machining and factory calibration, the injector achieves excellent fuel atomization and combustion efficiency. High-strength alloy construction and corrosion-resistant materials provide extended service life under demanding conditions, from over-the-road trucking to offshore marine power systems. The injector maintains full OEM interchangeability, making it a reliable drop-in replacement for original Cummins injectors without the need for system modifications.

For optimal performance, always use clean diesel fuel, replace fuel filters regularly, and avoid water contamination. Monitor fuel pressure and inspect the injector nozzle, plunger, and spring periodically. Common diagnostic checks include fuel supply pressure, contamination levels, internal leakage, and calibration condition. Proper maintenance ensures the 3074225 injector delivers consistent power, fuel economy, and durability across all heavy-duty industrial applications.