Ford 6.0L Power Stroke HPOP High Pressure Oil Pump | Bostech HPOP123X | 2003-2004 Early Build | Remanufactured

Remanufactured Bostech high-pressure oil pump (HPOP), part number HPOP123X, for early-build 2003–2004 Ford 6.0L Power Stroke and International VT365 diesel engines (built before 9/22/03). The HPOP supplies the regulated high-pressure oil that actuates the HEUI fuel injectors. This unit includes a branch tube seal kit, cover gasket, and mounting O-ring kit, and is a core-charge exchange unit.

Key Features:

• Bostech remanufactured high-pressure oil pump (HPOP), part number HPOP123X
• For the early-build 6.0L HPOP (axial-piston swash-plate design)
• Includes the branch tube seal kit — critical for early 6.0L trucks prone to internal leaks in that area
• Includes cover gasket and mounting O-ring kit
• Updated discharge fitting (threaded plug) that addresses the early ball-style design weakness

Specifications:

• Base part number: HPOP123X (Bostech)
• Component type: High-pressure oil pump (HPOP)
• Condition: Remanufactured (core charge applies)
• Engine make: Ford / International
• Engine: 6.0L Power Stroke / VT365
• Years: 2003–2004 (engines built before 9/22/03)
• Included: branch tube seal kit, cover gasket, mounting O-ring kit

Compatibility / Fitment:

• Fits early-build 2003–2004 Ford 6.0L Power Stroke and International VT365 engines built before 9/22/03
• This is the early-build 6.0L HPOP — it does NOT fit the late build (9/22/03 and later), which uses a different HPOP (see HPOP122X)
• Includes the branch tube seal kit, cover gasket, and mounting O-ring kit; the IPR valve and ICP sensor are not included (see HPOP123X-K1 for a version with the IPR valve, or -K2 with IPR and ICP)
• Remanufactured exchange unit — a core charge applies
• Verify your engine build date before ordering

Conclusion:

The Bostech HPOP123X is a remanufactured high-pressure oil pump for early-build 2003–2004 Ford 6.0L Power Stroke and International VT365 engines (built before 9/22/03), supplied with the critical branch tube seal kit, cover gasket, and O-rings. It restores the high-pressure oil supply that fires the HEUI injectors. Because the early and late 6.0L use different HPOPs, verify your engine build date before ordering, and note the core return.