This is the Bosch HP004X, a high-pressure oil pump (HPOP) remanufactured by Bosch, the original equipment maker of this pump. It is the earliest of the four Bosch pump numbers for the 7.3L: it covers the 1994 to 1995 Ford 7.3L Power Stroke in F-Series trucks and E-Series vans, and the International T444E through engine serial number 216,543. It replaces Ford F4TZ-9A543-BRM and F4TZ-9VA543-AARM and Navistar 1825247C91, 1825260C91, 1825271C93 and 2503701C91. The mounting gasket is included. The injection pressure regulator (IPR) valve is not.

The HPOP supplies the high-pressure engine oil that fires the HEUI injectors. A worn pump shows up as a long crank, an engine that will not restart hot but starts again once the oil cools, or low power with low injection control pressure. A leaking IPR valve, leaking injector O-rings or hoses and a low oil reservoir cause the same complaints, so rule those out first. This first pump has a drain check valve and no edge filter of its own: the edge filter sits in the early IPR valve. Ford changed the pump during the 1995 model year, so the engine serial number matters more than the model year.

Specifications

Fits / Applications

• Ford 7.3L Power Stroke, 1994 to 1995, F-Series and E-Series
• International T444E, engine serial numbers through 216,543
• Ford engines from serial 187,100 to 216,543 (from the mid-1995 change, often called 1995.5): catalogs disagree between this pump and the HP005X. Confirm by serial number.
• Later engines take other pumps: HP005X for serial 216,544 to 661,894, HP007X for 661,895 to 843,989, HP008X from 843,990

The IPR valve is not included. Move yours to the new pump with a new seal kit, or fit a new one, and keep the early IPR with the built-in edge filter on this pump, because the pump has no edge filter of its own. Use the mounting gasket supplied. HEUI injectors run on engine oil, so change the oil and filter, fill the high-pressure oil reservoir and prime the system before the first start.

Part Numbers & Cross Reference

Bosch HP004X  ·  Rexroth R98620004R  ·  Ford F4TZ-9A543-BRM  ·  Ford F4TZ-9VA543-AARM  ·  Navistar 1825247C91  ·  Navistar 1825260C91  ·  Navistar 1825271C93  ·  Navistar 2503701C91  ·  Navistar ReNew 991936C95  ·  Delphi HTP104  ·  Alliant Power remanufactured equivalent AP63621

Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.

Frequently Asked Questions

Will the HP004X fit my 1995 Ford 7.3L Power Stroke?

It fits 1994 and 1995 engines through serial number 187,099. For a later 1995 build, call 530-668-0818 with the engine serial number, because some catalogs move those engines to the HP005X.

What numbers does the Bosch HP004X replace?

Ford F4TZ-9A543-BRM and F4TZ-9VA543-AARM (also written without hyphens, F4TZ9A543BRM), and Navistar 1825247C91, 1825260C91, 1825271C93 and 2503701C91. Catalogs also cross it to Rexroth R98620004R and Alliant Power AP63621.

Does the HP004X come with the IPR valve?

No. It comes with the mounting gasket, and the IPR valve is separate. This pump has no edge filter of its own, so it needs the early IPR valve with the edge filter built in.

Is it new or remanufactured, and is there a core?

It is remanufactured by Bosch, the original equipment maker of this pump. A refundable core charge applies, and it comes back in full when we receive your old pump.

Related Parts

• 1996-1997 Ford 7.3L Power Stroke & T444E High-Pressure Oil Pump (HPOP) | Bosch HP005X Remanufactured
• 1999.5-2003 Ford 7.3L Power Stroke & T444E High-Pressure Oil Pump (HPOP) | Bosch HP008X Remanufactured
• 1998-Early 1999 7.3L Power Stroke & T444E HPOP High-Pressure Oil Pump | Alliant Power AP63623 Remanufactured
• 7.3L Powerstroke HEUI Injector (AE Long-Lead) | Alliant Power AP63904AE Reman, 1996-2003

Why Buy From Valley Fuel Injection

We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.