Upgrade your Cummins ISB 6.7L engine with the OEM Fuel Injection Pump, part number 5398557, an essential component for maintaining the performance and efficiency of your diesel vehicle. This genuine Cummins part is designed to meet the exact specifications of your engine, ensuring reliable and optimal operation. Manufactured in Mexico, this fuel injection pump is a direct replacement for several Cummins models, including the 4983416 and 4983416RX. It’s a prime choice for those seeking to replace their existing pump or to prevent potential issues with a high-quality, brand-specific component.