Cummins original Replacement for OEM 1731091 Diesel Fuel Injector Compatible with DC12.15 DC12.18 QSX15 ISX15 X15 Engines for Excavator Construction Machinery Parts original new injector

Engineered for demanding industrial duty cycles, the Cummins 1731091 diesel fuel injector serves the 15L engine family, including QSK15, QSKX15, QSX15, ISX15 and X15 platforms. Operating within the XPI common-rail fuel system, it delivers precise fuel quantities at ultra-high pressures with multiple injection events per cycle, supporting stable combustion, power recovery and reduced smoke potential across heavy-load applications rated 450–675 hp / 336–503 kW and 1650–2050 lb-ft / 2237–2779 N·m of torque.

This injector assembly is cross referenced to 1499714, 570016, 1521977, 1481827, 4928262, 4088327, 4384260, 1464994, 579261, 1529790, 1511696, 4088660, 4076963 and 4954648, simplifying sourcing for global aftermarket buyers. Its precision fuel delivery and fine atomization suit trucks, excavators, wheel loaders, mining trucks, drilling rigs, generator sets, oilfield machinery, rail equipment and industrial power units, including prime, standby and continuous power ratings.

Proper diagnosis of hard starting, rough idle, black or white smoke, power loss, high fuel consumption, misfire or engine derate should include fuel pressure testing, return-flow testing, ECM fault-code reading, cylinder cut-out testing and visual inspection. To maximize service life, use clean diesel fuel, replace fuel filters on schedule, drain the water separator and follow the exact engine manual for the ESN and duty cycle.