Cummins original Diesel Engine Fuel Injector Y431K05417 4928106 2867149 4964171 for Cummins QSK19 QSK38 QSK50 QSK60 Construction Equipment original new injector

For QSK19 fuel-system servicing, the Y431K05417 is an original new common rail diesel injector for Cummins QSK19 and QSK19 Tier 2 applications. It receives high-pressure diesel and meters fuel into the combustion chamber according to ECM-controlled injection timing and duration. Correct injector performance directly affects starting, idle stability, combustion quality, power output, fuel economy, exhaust smoke and cylinder balance, making accurate selection essential for professional engine service.

The injector can be positioned across QSK19-Series, QSK19 G-Drive and QSK19 MCRS catalogs. The QSK19-Series is a 19-liter inline six-cylinder diesel engine, with Cummins G-Drive ratings of 500–550 kW prime and 550–600 kW standby. Relevant equipment includes generator sets, rail and mining power units, crushing plants, oil and gas installations, marine auxiliary engines, construction equipment, industrial power packs and engine rebuild projects, serving distributors, rebuilders, generator service companies and heavy-equipment fleets.

Cross-reference coverage includes F00BL0J018, 4964171, 4964171NX, 4964171PX, 4964171RX and 0986435611, together with recognized spacing and hyphen variants. Supplier listings also associate Y431K05558 and Y431K05248 with QSK19 common rail injector listings. Related family references should not be treated as automatic substitutes. Before ordering, buyers should confirm the old injector number and supply the engine serial number, CPL, ECM model, engine nameplate and clear injector photos. This verification process supports accurate repair, maintenance and overhaul purchasing while reducing identification risk.