Cummins original 4951420 PT Fuel Injection Pump for 6CT N14 6BT ISX15 QSX15 Marine Diesel Engine Parts Replacement for OEM 4951419 4951424 original new injector

Engineered for demanding diesel applications, the Cummins PT Fuel Injector 4951420 delivers reliable fuel metering performance across the full Cummins N14 engine family. This OEM-equivalent injector assembly is manufactured from high strength alloy steel and features precision-machined internal components that ensure accurate fuel delivery, stable idle characteristics, and consistent combustion under continuous heavy-duty operation.

Designed as a direct replacement for authorized cross numbers including 3411767, 3411767RX, 3411767PX, 3411766, 3411765, 3411763, 3083662 and EX631767, this PT (Pressure-Time) injector fits Cummins N14, N14 Celect and N14 Celect Plus engines rated from N14-330 through N14-500. It supports Kenworth, Peterbilt, Freightliner, International and Western Star trucks, as well as marine engines, diesel generator sets, mining equipment, construction machinery, oilfield and agricultural applications. OEM flow calibration guarantees injector consistency, while hardened wear components and corrosion-resistant materials extend service life.

Precision nozzle technology improves combustion efficiency and reduces operating losses. For optimal performance, use clean diesel fuel, replace fuel filters regularly, monitor fuel pressure, and inspect injector performance periodically to prevent fuel system contamination. Recommended diagnostics include fuel pressure testing, cylinder balance testing, injector flow testing, leak-down testing and electronic engine diagnostics. Backed by a 12-month warranty, the 4951420 is a dependable solution for fleet operators, distributors and maintenance workshops.