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The Dieselsite Adrenaline HPOP (part # ADRSI) with stainless steel threads is the top-performing direct-fit high pressure oil pump upgrade available for the 1996–2003 7.3L Powerstroke.
This high-volume pump solves the most common limitations of the factory HPOP — pressure drop under load and injector starvation — while remaining a true bolt-on replacement. Whether your truck is stock or heavily modified, the Adrenaline delivers the consistent high-pressure oil your injectors need for proper atomization, stronger performance, and long-term reliability.
Key Benefits
- Higher flow & sustained pressure — Maintains optimal 2800–3000 psi under wide-open throttle far longer than the factory pump.
- Supports larger injectors — Safely feeds up to 275cc injectors (approximately 550 hp capability).
- Excellent on stock trucks — Faster starts, smoother idle, stronger low-end pulling power, and potential fuel economy gains. Many owners report the engine feels “fresher” even at high mileage.
- Future-proofs your truck — Handles a wide range of injector sizes and performance modifications without needing another pump later.
- Stainless steel threads — Superior corrosion resistance and thread durability compared to standard pumps.
- Cures common issues — Helps eliminate symptoms of weak HPOP such as P1211 codes, loss of power under load, and hard/hot starts.
High-pressure oil is what actually fires the injectors on the 7.3L Powerstroke. When the stock pump wears or can’t keep up with larger nozzles, pressure drops and performance suffers. The Adrenaline’s increased volume keeps pressure strong where it matters most — right at the injectors.
This is a true drop-in upgrade. No other modifications are required for installation (stubby wrenches recommended for the tight valley area). It comes with a new mounting gasket.
Important Fitment Note Fits 1996–2003 7.3L Powerstroke (engine serial number 201681 and later). 1994–1995 OBS trucks require the anti-drainback version (Dieselsite ADR95SI).
What’s Included
- Dieselsite Adrenaline HPOP with stainless steel threads
- New mounting gasket
What’s Not Included
- IPR valve
- HPOP supply/return hoses or fittings (reuse your existing or add the Dieselsite HPOP Hose Kit)
Why Choose the Dieselsite Adrenaline HPOP? It’s the proven, time-tested solution the 7.3L community has trusted for years. Whether you’re towing heavy, chasing more power with bigger injectors, or simply want your high-mileage 7.3L to feel strong and reliable again, the Adrenaline delivers measurable improvements in drivability, performance, and peace of mind.
Recommended Add-Ons
- Dieselsite HPOP Hose Kit (highly recommended)
- New IPR Valve
- ICP Sensor / pigtail (common to replace during HPOP service)
SERIAL NUMBER FOR ANTI-DRAINBACK FEATURE:
- 1994-1995 Engine Serial Number 201680 and before will need the Anti-drainback feature
- Serial Number 201681 and after are 1996 to 2003 and do not need the Anti-drainback feature
The Dieselsite Adrenaline HPOP (part # ADRSI) with stainless steel threads is the top-performing direct-fit high pressure oil pump upgrade available for the 1996–2003 7.3L Powerstroke.
This high-volume pump solves the most common limitations of the factory HPOP — pressure drop under load and injector starvation — while remaining a true bolt-on replacement. Whether your truck is stock or heavily modified, the Adrenaline delivers the consistent high-pressure oil your injectors need for proper atomization, stronger performance, and long-term reliability.
Key Benefits
Higher flow & sustained pressure — Maintains optimal 2800–3000 psi under wide-open throttle far longer than the factory pump.
Supports larger injectors — Safely feeds up to 275cc injectors (approximately 550 hp capability).
Excellent on stock trucks — Faster starts, smoother idle, stronger low-end pulling power, and potential fuel economy gains. Many owners report the engine feels “fresher” even at high mileage.
Future-proofs your truck — Handles a wide range of injector sizes and performance modifications without needing another pump later.
[...]
The Dieselsite Adrenaline HPOP (part # ADRSI) with stainless steel threads is the top-performing direct-fit high pressure oil pump upgrade available for the 1996–2003 7.3L Powerstroke.
This high-volume pump solves the most common limitations of the factory HPOP — pressure drop under load and injector starvation — while remaining a true bolt-on replacement. Whether your truck is stock or heavily modified, the Adrenaline delivers the consistent high-pressure oil your injectors need for proper atomization, stronger performance, and long-term reliability.
Key Benefits
- Higher flow & sustained pressure — Maintains optimal 2800–3000 psi under wide-open throttle far longer than the factory pump.
- Supports larger injectors — Safely feeds up to 275cc injectors (approximately 550 hp capability).
- Excellent on stock trucks — Faster starts, smoother idle, stronger low-end pulling power, and potential fuel economy gains. Many owners report the engine feels “fresher” even at high mileage.
- Future-proofs your truck — Handles a wide range of injector sizes and performance modifications without needing another pump later.
- Stainless steel threads — Superior corrosion resistance and thread durability compared to standard pumps.
- Cures common issues — Helps eliminate symptoms of weak HPOP such as P1211 codes, loss of power under load, and hard/hot starts.
High-pressure oil is what actually fires the injectors on the 7.3L Powerstroke. When the stock pump wears or can’t keep up with larger nozzles, pressure drops and performance suffers. The Adrenaline’s increased volume keeps pressure strong where it matters most — right at the injectors.
This is a true drop-in upgrade. No other modifications are required for installation (stubby wrenches recommended for the tight valley area). It comes with a new mounting gasket.
Important Fitment Note Fits 1996–2003 7.3L Powerstroke (engine serial number 201681 and later). 1994–1995 OBS trucks require the anti-drainback version (Dieselsite ADR95SI).
What’s Included
- Dieselsite Adrenaline HPOP with stainless steel threads
- New mounting gasket
What’s Not Included
- IPR valve
- HPOP supply/return hoses or fittings (reuse your existing or add the Dieselsite HPOP Hose Kit)
Why Choose the Dieselsite Adrenaline HPOP? It’s the proven, time-tested solution the 7.3L community has trusted for years. Whether you’re towing heavy, chasing more power with bigger injectors, or simply want your high-mileage 7.3L to feel strong and reliable again, the Adrenaline delivers measurable improvements in drivability, performance, and peace of mind.
Recommended Add-Ons
- Dieselsite HPOP Hose Kit (highly recommended)
- New IPR Valve
- ICP Sensor / pigtail (common to replace during HPOP service)
SERIAL NUMBER FOR ANTI-DRAINBACK FEATURE:
- 1994-1995 Engine Serial Number 201680 and before will need the Anti-drainback feature
- Serial Number 201681 and after are 1996 to 2003 and do not need the Anti-drainback feature
Q
TOM WIGGINS • 04/21/2025, 7:26:45 PM
On the 7.3 Powerstroke Adrenaline HPOP. Do you provide a return label for the Core?
A
04/22/2025, 6:01:41 PM
Not on this product.
Q
Mike • 02/21/2026, 4:04:34 PM
I recently bought Adrenaline HPOP and need to know where to sent the core to.
A
02/23/2026, 3:08:52 PM
Please fill out the core return form (located in the forms and downloads on the website) and include it in the box with your core. The address to ship to can be found at the top of the form.
5/5 Stars out of 8 Reviews
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Jack | July 24th, 2025
I’ve been looking to upgrade my HPOP for a while now and after installing this I wish I’d done it sooner. It’s a complete different truck, starts faster, is insanely quiet. So much so that I had to double check that my Hydra didn’t somehow get disconnected. It’s an expensive upgrade but I’m telling you, it’s worth every penny. As with all my FFD orders, shipping was super quick. I would go ahead and get a set of stubby wrenches- save ya a lot of cussin
Doug Merchant (Punta Gorda) | June 16th, 2024
great up grade
Ron Tuggle (Burns) | June 10th, 2024
Install of the adrenaline pump was good.. throttle seems more responsive, and NO LEAKS!!!.. VERY HAPPY
Rick B (Maricopa) | May 30th, 2024
Installation was straightforward and clean no problems. worked out great very happy
Shawn McGhee (Washington State) | April 16th, 2024
One element of an overall build on a 97 OSB. First diesel rodeo and install was straight forward, I did have a clean valley as I was deleting the fuel bowl and mechanical pump. I imagine the install would be perceived as more complicated if having to work around the stock fuel system. Can not attest to the difference this stage one pump achieved as it was just one element of many that was done to the OEM truck. What I can say, is this OBS is a completely different truck than what it was for her first 150k. Good lord build it and man does she run ???? Can�t say enough good things about FFD. Five stars for them as well. S
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Fits: 7.3 Powerstroke 1994-2003
Fits: Powerstroke 1994-2010
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1996-2003
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1994-1995