Cummins original 3047973 Fuel Injector Replacement for OEM Cummins NT855 NH855 NT495 NT743 NT85 14.0L 3047973 3030445Diesel Engine Parts original new injector

Engineered for demanding industrial fuel delivery, the Cummins PT Fuel Injector 3047973 is a precision-built component designed to serve the extensive Cummins 855 Series engine family. Manufactured according to OEM calibration specifications, this injector ensures consistent fuel metering under varying operating conditions, supporting stable engine performance across continuous-duty applications. It is fully compatible with NH855, NT855, NTC855, NTA855 and related variants used throughout heavy equipment fleets.

Built with heavy duty construction and special hardened steel internal components, unit 3047973 delivers high wear resistance and long service life in high-hour operating environments. Advanced anti-corrosion coating technology provides added protection against harsh fuel and climate conditions, making it suitable for mining trucks, generator sets, marine engines, excavators, loaders, and oilfield equipment. Global interchangeability with authorized numbers including 3030445, R3047973, 3047973R, M3047973, FP3047973, DS3047973, 209986, 209986X, and 3047973PX simplifies sourcing and cross-referencing.

For optimal reliability, use premium diesel fuel, maintain fuel cleanliness, and replace fuel filters regularly. During installation, always replace sealing components, verify injector height settings, and follow Cummins maintenance manuals, completing an injector cutout test afterward. Regular injector balance testing and monitoring of exhaust smoke and fuel consumption trends help address common issues such as hard start, PT injector smoke, and NT855 injector troubleshooting.