Your Cart (0)
Thumbnail Filmstrip of 7.3 Powerstroke Stage 2 HPOP 96-03 Atlas 277-9603 Images
Elevate your 7.3L Power Stroke’s high-pressure oil system with the Atlas Stage 2 HPOP.
The Atlas Stage 2 HPOP (part #277-9603) is the go-to upgrade for 1996-2003 7.3 Powerstroke owners who want reliable performance with room to grow. Whether you’re running stock injectors or stepping up to larger hybrids, this pump delivers the extra oil volume and pressure your HEUI system needs.
Engineered as a true Stage 2 unit, it provides over 25% more flow than a stock HPOP while remaining a direct drop-in replacement. It’s the perfect choice for daily drivers, tow rigs, or modified trucks that need dependable high-pressure oil delivery without the limitations of a worn factory pump.
Key Features & Benefits:
- 25%+ more flow over stock HPOP for better injector performance under load
- Supports injectors up to 250cc — future-proofs your build
- Direct drop-in replacement — no modifications required
- Fitted with steel threaded inserts to prevent thread stripping (common failure point on stock pumps)
- Includes new mounting gasket
- New Viton O-rings for your existing high-pressure fittings
- Every pump is flow-bench tested and ready to install
- Remanufactured from quality cores with Stage 2 performance upgrades
Important Notes:
- Core charge applies — you must remove the IPR valve and hose fittings from your old pump before returning the core.
- Replacement pump does not include IPR valve or high-pressure hose fittings.
- 1-Year Warranty
Why Upgrade Your HPOP? The factory HPOP often becomes the limiting factor once you add bigger injectors, performance tuning, or as mileage adds up. Low oil volume causes pressure drops, rough idle, loss of power, and injector issues. The Atlas Stage 2 solves this with significantly higher capacity while keeping excellent drivability and reliability.
Recommended Add-Ons:
- 7.3 Powerstroke HPOP Hose Kit
- New IPR Valve
- ICP Sensor
This pump is a favorite among 7.3 owners for good reason — it gives you the flow you need today and the headroom for upgrades tomorrow.
Elevate your 7.3L Power Stroke’s high-pressure oil system with the Atlas Stage 2 HPOP.
The Atlas Stage 2 HPOP (part #277-9603) is the go-to upgrade for 1996-2003 7.3 Powerstroke owners who want reliable performance with room to grow. Whether you’re running stock injectors or stepping up to larger hybrids, this pump delivers the extra oil volume and pressure your HEUI system needs.
Engineered as a true Stage 2 unit, it provides over 25% more flow than a stock HPOP while remaining a direct drop-in replacement. It’s the perfect choice for daily drivers, tow rigs, or modified trucks that need dependable high-pressure oil delivery without the limitations of a worn factory pump.
Key Features & Benefits:
25%+ more flow over stock HPOP for better injector performance under load
Supports injectors up to 250cc — future-proofs your build
Direct drop-in replacement — no modifications required
Fitted with steel threaded inserts to prevent thread stripping (common failure point on stock pumps)
Includes new mounting gasket
New Viton O-rings for your existing high-pressure fittings
Every pump is flow-bench tested and ready to install
Remanufactured fr[...]
Elevate your 7.3L Power Stroke’s high-pressure oil system with the Atlas Stage 2 HPOP.
The Atlas Stage 2 HPOP (part #277-9603) is the go-to upgrade for 1996-2003 7.3 Powerstroke owners who want reliable performance with room to grow. Whether you’re running stock injectors or stepping up to larger hybrids, this pump delivers the extra oil volume and pressure your HEUI system needs.
Engineered as a true Stage 2 unit, it provides over 25% more flow than a stock HPOP while remaining a direct drop-in replacement. It’s the perfect choice for daily drivers, tow rigs, or modified trucks that need dependable high-pressure oil delivery without the limitations of a worn factory pump.
Key Features & Benefits:
- 25%+ more flow over stock HPOP for better injector performance under load
- Supports injectors up to 250cc — future-proofs your build
- Direct drop-in replacement — no modifications required
- Fitted with steel threaded inserts to prevent thread stripping (common failure point on stock pumps)
- Includes new mounting gasket
- New Viton O-rings for your existing high-pressure fittings
- Every pump is flow-bench tested and ready to install
- Remanufactured from quality cores with Stage 2 performance upgrades
Important Notes:
- Core charge applies — you must remove the IPR valve and hose fittings from your old pump before returning the core.
- Replacement pump does not include IPR valve or high-pressure hose fittings.
- 1-Year Warranty
Why Upgrade Your HPOP? The factory HPOP often becomes the limiting factor once you add bigger injectors, performance tuning, or as mileage adds up. Low oil volume causes pressure drops, rough idle, loss of power, and injector issues. The Atlas Stage 2 solves this with significantly higher capacity while keeping excellent drivability and reliability.
Recommended Add-Ons:
- 7.3 Powerstroke HPOP Hose Kit
- New IPR Valve
- ICP Sensor
This pump is a favorite among 7.3 owners for good reason — it gives you the flow you need today and the headroom for upgrades tomorrow.
Q
Dan J • 05/21/2025, 7:25:22 PM
Will the Atlas Stage 2 HPOP support FFD 180/30% injectors and will i notice much a difference over the stock HPOP?
A
05/29/2025, 2:08:35 PM
This Hpop will support those injectors. If your HPOP is not holding pressure you will feel a difference.
Q
Thomas Tuttle • 07/01/2026, 7:14:18 PM
I know it says 250cc but will it support 250/200 injectors??
A
07/07/2026, 1:02:54 PM
It will but would be maxed out. Suggest the adrenaline for those injectors.
5/5 Stars out of 1 Reviews
0
0
0
0
1
Silvan (Provo) | November 12th, 2024
this is a high quality HPOP. at WOT i dont notice my injectors running out of power anymore. I am currently running stock injectors, but want to upgrade down the road. I like how this pump will support up to 250/100 injectors so i still have plenty of options down the road and dont have to worry about revisiting the oil supply.
Proposition 65 Warning Information -
P65Warnings.ca.gov