Cummins original 3349861 Diesel Injector Common Rail Fuel Injector for Cummins K50 QSK50 K19 3095773 3609962 Engine Replacement original new injector

Engineered for the demanding requirements of Cummins PT fuel systems, the 3349861 fuel injector assembly delivers precise fuel metering across a wide range of heavy duty diesel platforms. Manufactured to OEM tolerances using high strength materials, this injector supports the Pressure-Time (PT) fuel injection principle to ensure consistent atomization, stable combustion, and dependable engine output under continuous industrial load conditions.

This injector is compatible with Cummins K19, K38, K50, KTA19, KTA38, KTA50, KTTA19, KTTA38, KTTA50, QSK19, QSK38, and QSK50 diesel engines. It serves mining, marine, power generation, oil & gas, and construction applications, including mining trucks, drilling systems, commercial vessels, prime and standby generators, fracturing units, and heavy earthmoving machinery. Cross-referenced alternatives include 3349861PX, 3349861R, 3349860, 3095773, 3609962, 3609849, and 3053126 for flexible sourcing.

Designed with a heavy duty structure and corrosion resistance, this component promotes improved combustion efficiency, reduced fuel consumption, lower emissions, and extended injector service life. Recommended maintenance includes fuel filter inspection every 250 hours, filter replacement every 500 hours, injector inspection every 1000 hours, and injector testing every 2000 hours. Proper installation requires cleaning the injector bore, replacing all seals and O-rings, torquing to specification, and verifying fuel pressure and leak integrity.