Restore strong, consistent high-pressure oil delivery, reliable cold and hot starting, and dependable injector operation to your 1998-1999.5 Ford 7.3L Power Stroke with a Bosch remanufactured High-Pressure Oil Pump (HPOP). On the 7.3L Power Stroke, the HPOP supplies the high-pressure oil that actuates the hydraulic electronic unit injectors (HEUI), so a weak or failing pump directly affects starting, idle quality, and power. This direct-replacement HPOP is commonly serviced when the original pump is worn, leaking, or unable to build or hold adequate injection control pressure (ICP). Replacing a failed or weak pump can help correct symptoms such as hard starting, extended crank time, no-start conditions, low ICP, rough idle, surging, reduced power, and stalling when the HPOP is verified as the cause. Key Features & Specs: Remanufactured Quality: Remanufactured to support OE-style fit, function, and durability for dependable high-pressure oil delivery. Direct Replacement: Designed specifically for 1998-1999.5 Ford 7.3L Power Stroke applications. Supports Proper Injector Operation: Helps restore the high-pressure oil supply the HEUI injectors require to start, idle, and run correctly when the original pump is worn, leaking, or weak. Installation Ready: Built for direct replacement. Always inspect related high-pressure oil hoses, fittings, IPR valve, ICP sensor, and oil rail seals during installation. Cross-Reference Numbers: Bosch: HP007X Note on Fitment: Always verify your vehicle's exact build date, VIN, engine application, and existing part number before ordering. Fitment can vary by production date and emissions configuration. This high-pressure oil pump is commonly listed for 1998-1999.5 Ford F-Series Super Duty and E-Series applications equipped with the 7.3L Power Stroke diesel engine.