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Thumbnail Filmstrip of 1996-2003 7.3L Powerstroke Stage 1 HPOP Pump Atlas 477-9603 Images
The Atlas 477-9603 is a Stage 1 high-pressure oil pump for a 1996–2003 7.3 Powerstroke. It is a modified stock reman with 17-degree internals, built to flow like a fresh 17-degree pump or a little more.
Atlas rates it for stock injectors through about 205 cc. That is the daily and tow pump. The Stage 2, 277-9603, is the one with more than 25 percent extra flow for injectors up toward 250 cc. The discharge ports use steel threaded inserts so the fittings do not strip the aluminum. A mounting gasket and new Viton O-rings for your existing lines are in the box. Every pump is flow-bench tested. OBS and early-1999 cores are converted to the 17-degree internals. The IPR and the hose fittings are not included. Pull those off your old pump before you send the core back. A core charge applies.
It fits 1996–2003 Super Duty, OBS, and Excursion 7.3 trucks. It does not fit a 1994–1995 pump.
Change the oil when it goes on. A new pump on dirty oil will not last. If the injectors are already past 205 cc, order the Stage 2.
Fitment
- 1996–2003 Ford 7.3L Powerstroke
- Drop-in Stage 1 HPOP
- 17-degree stock flow or better
- Supports up to about 205 cc injectors
- Gasket and Viton O-rings included
- IPR and fittings not included
- Core charge applies
The Atlas 477-9603 is a Stage 1 high-pressure oil pump for a 1996–2003 7.3 Powerstroke. It is a modified stock reman with 17-degree internals, built to flow like a fresh 17-degree pump or a little more.
Atlas rates it for stock injectors through about 205 cc. That is the daily and tow pump. The Stage 2, 277-9603, is the one with more than 25 percent extra flow for injectors up toward 250 cc. The discharge ports use steel threaded inserts so the fittings do not strip the aluminum. A mounting gasket and new Viton O-rings for your existing lines are in the box. Every pump is flow-bench tested. OBS and early-1999 cores are converted to the 17-degree internals. The IPR and the hose fittings are not included. Pull those off your old pump before you send the core back. A core charge applies.
It fits 1996–2003 Super Duty, OBS, and Excursion 7.3 trucks. It does not fit a 1994–1995 pump.
Change the oil when it goes on. A new pump on dirty oil will not last. If the injectors are already past 205 cc, order the Stage 2.
Fitment
1996–2003 Ford 7.3L Powerstroke
Drop-in Stage 1 HPOP
17-degree stock flow or better
Supports up to about 205 cc injectors
Gasket and V[...]
The Atlas 477-9603 is a Stage 1 high-pressure oil pump for a 1996–2003 7.3 Powerstroke. It is a modified stock reman with 17-degree internals, built to flow like a fresh 17-degree pump or a little more.
Atlas rates it for stock injectors through about 205 cc. That is the daily and tow pump. The Stage 2, 277-9603, is the one with more than 25 percent extra flow for injectors up toward 250 cc. The discharge ports use steel threaded inserts so the fittings do not strip the aluminum. A mounting gasket and new Viton O-rings for your existing lines are in the box. Every pump is flow-bench tested. OBS and early-1999 cores are converted to the 17-degree internals. The IPR and the hose fittings are not included. Pull those off your old pump before you send the core back. A core charge applies.
It fits 1996–2003 Super Duty, OBS, and Excursion 7.3 trucks. It does not fit a 1994–1995 pump.
Change the oil when it goes on. A new pump on dirty oil will not last. If the injectors are already past 205 cc, order the Stage 2.
Fitment
- 1996–2003 Ford 7.3L Powerstroke
- Drop-in Stage 1 HPOP
- 17-degree stock flow or better
- Supports up to about 205 cc injectors
- Gasket and Viton O-rings included
- IPR and fittings not included
- Core charge applies
Q
JD Garrison • 01/24/2025, 1:00:41 AM
Can Atlas stage 1 be upgraded to stage 2? Or would it require total replacement?
A
02/10/2025, 8:13:56 PM
You'll need a new pump.
Q
Paul • 04/10/2025, 10:59:53 PM
Will this support 180cc single shot injectors
A
04/23/2025, 7:11:08 PM
Yes.
Q
Matt • 07/21/2025, 0:33:13 AM
Will this work with stock injectors until I get around to upgrading them?
A
07/21/2025, 8:35:34 PM
Yes. No problems.
Q
Rodney • 09/03/2025, 6:25:14 PM
Would this fit my 99 f250 7.3
A
09/04/2025, 1:23:09 PM
Yes
Q
Christian • 09/07/2025, 6:22:25 AM
What do I do if I have a core but it has pulled threads
A
09/15/2025, 7:40:11 PM
You can send it as a core.
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5/5 Stars out of 5 Reviews
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5
Dustin (IN) | July 3rd, 2026
I've been running the 2002 7.3 stage 1 hpop for a few weeks now I'm very pleased with it. It is a great product very nice fittings hold the orings exceptionally well with the steel inserts performance is great very responsive and faster starts thanks Fullforce for the competitive pricing and very fast shipping
Levi (SD) | April 22nd, 2026
Couldn’t figure out how to do the send in cores first. Called customer service and they were wonderful to work with and get everything square away in less than a day
Rene (Idaho) | December 3rd, 2025
Installed and noted a notable benefit, I don't have the whole benefit of it yet being my injectors are failing. Even so, the truck starts up easier and runs better with a smoother power band.
John Utter (Elkton md) | March 6th, 2025
Great service they will walk to through the steps to send In your core very nice fast delivery
Rickey Driskill (Mississippi) | June 3rd, 2024
Timely delivery. Sent my old in first to skip the core charge. Very helpful. Had my return label emailed quickly so I could get the core in mail.
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Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1999-2003
Fits: 7.3 Powerstroke 1999-2003
Fits: 7.3 Powerstroke 1996-2003
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1994-1997
Fits: 7.3 Powerstroke 1994-1995