1994-2003 FORD 7.3L POWERSTROKE HIGH-PRESSURE OIL PUMP MASTER SERVICE KIT
Keep your 7.3L Power Stroke performing at peak efficiency with this High-Pressure Oil Pump (HPOP) Master Service Kit, designed specifically for 1994–2003 Ford Power Stroke Diesel engines. This all-in-one solution includes every major seal, O-ring, and plug required to completely reseal the HPOP system — ensuring it maintains critical injection pressure, prevents leaks, and sustains cold start reliability.
Built for professional technicians and DIY diesel enthusiasts alike, this kit resolves some of the most common issues on aging 7.3L platforms: oil leaks around the reservoir, poor injector performance, and hard cold starts. Whether you’re chasing a performance drop or conducting preventive maintenance, this is the kit trusted by diesel techs.
Crafted from high-temp Viton and steel-reinforced seals, each component meets or exceeds OEM standards — and is built to withstand extreme diesel engine heat and pressure. The included parts Part Numbers ISK635, ISK617, ISK795, and TL3.
1994-2003 Ford 7.3L Power Stroke Diesel High Pressure Oil Pump Master Service Kit includes:
2- Discharge port O-Rings
1- Rear Port Plug O-Ring
1- Non- Serviceable Port O-Ring
1- IPR Valve O-Ring
1- IPR Nut
1- Fill Plug O-Ring
1- Non-serviceable port long threaded repair plug
1- Replacement Check Ball
1- Set of Repair instructions
1- .5ml Thread Sealer (Loctite)
2- Diesel High Pressure Oil Pump STC Fittings
1- STC Quick Disconnect Tool
1- High Pressure Oil Pump Mounting Gasket
Key Benefits:
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Complete solution for resealing HPOP on 7.3L Power Stroke
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Prevents oil pressure loss and HPOP system leaks
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Improves injection pressure and cold start reliability
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Eliminates common hard-start, low-power symptoms
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High-temp Viton and upgraded materials throughout
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Includes hard-to-find non-serviceable plug seals and tool
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OEM fitment ensures proper alignment and sealing
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Designed for longevity under extreme diesel heat and pressure
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Ideal for preventive maintenance or post-leak repair
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Supports injector performance and fuel atomization
Truck Compatibility / Applications:
Fits the following 7.3L Power Stroke diesel vehicles equipped with the High-Pressure Oil Pump (HPOP):
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1994.5–1997 Ford F-250 / F-350 / F-Super Duty – 7.3L Power Stroke
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1999–2003 Ford F-250 / F-350 / F-450 / F-550 Super Duty – 7.3L Power Stroke
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2000–2003 Ford Excursion – 7.3L Power Stroke
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1994.5–2003 Ford E-250 / E-350 / E-450 Econoline Vans – 7.3L Power Stroke
Note: Not for use on 6.0L Power Stroke or early 7.3L IDI platforms.
The HPOP Master Service Kit for 1994–2003 Ford 7.3L Power Stroke engines is your all-in-one reseal solution for maintaining oil injection pressure and eliminating leaks. Designed for full HPOP overhauls, it includes upgraded seals, non-serviceable plug components, and hard-to-find fittings to keep your diesel running smooth, strong, and leak-free.
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California Proposition 65 Warning:
This product may expose you to chemicals including carbon black, petroleum-based compounds, and/or lead, which are known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit: www.P65Warnings.ca.gov
