0445120177, 5254261, 5254261NX, 5254261PX, 5254261RX. Fuel Injector 0445120177 5254261 For Cummins QS4.5 QSB6.7 Engine. Fit for Cummins Engine: QSB 6.7L, ISB 6.7L. This performance part can enhance your vehicle's performance and is a must-have for Cummins engine owners.
