Restore strong, consistent high-pressure oil delivery, reliable cold and hot starting, and dependable injector operation on your 1999.5-2003 Ford 7.3L Power Stroke with this Bosch remanufactured High-Pressure Oil Pump. On the 7.3L Power Stroke, the high-pressure oil pump supplies the oil pressure required to actuate the HEUI fuel injectors. When the HPOP becomes weak or begins to fail, it can directly affect starting, idle quality, throttle response, power, and overall injector performance. 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 1999.5-2003 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: HP008X 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 1999.5-2003 Ford F-Series Super Duty and Excursion applications equipped with the 7.3L Power Stroke diesel engine.