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River City Diesel Thumper 1 HPOP – 6.0 Powerstroke (2004.5–2007)
Looking to give your 6.0 Powerstroke real oil pressure and volume? The River City Diesel Thumper 1 High Pressure Oil Pump is the go-to drop-in upgrade for 2004.5–2007 6.0L Powerstroke trucks.
This is not just a remanufactured stock pump. River City Diesel starts with a cast-iron housing and performs extensive upgrades: internal porting, modified cam clearance, and a high-displacement cam. The result is significantly more oil volume and pressure than the factory HPOP — all while remaining a true bolt-in replacement.
Key Benefits
- Up to 100 rwhp gain over a stock pump at 3000 RPM (proven on trucks with 225cc injectors)
- Excellent match for stock injectors all the way up to 225cc conventional injectors
- Improved injector response, atomization, and overall drivability
- More consistent high-pressure oil delivery under load
- Only upgraded cast-iron HPOP available on the market
Built for Reliability Every Thumper 1 is remanufactured with all-new check valves, heads, and shafts. It includes the updated STC fitting and branch tube for a fresh, leak-free install (seal kit sold separately).
Whether you’re keeping your truck mostly stock or building a solid street performer, the Thumper 1 gives your injectors the oil supply they need without the complexity or cost of dual HPOP setups.
Fitment 2004.5 – 2007 Ford 6.0L Powerstroke
What’s Included
- River City Diesel Thumper 1 HPOP
- Updated STC fitting
- Branch tube
Notes
- HPOP seal kit sold separately
- Core charge applies
- 1-Year Warranty
River City Diesel Thumper 1 HPOP – 6.0 Powerstroke (2004.5–2007)
Looking to give your 6.0 Powerstroke real oil pressure and volume? The River City Diesel Thumper 1 High Pressure Oil Pump is the go-to drop-in upgrade for 2004.5–2007 6.0L Powerstroke trucks.
This is not just a remanufactured stock pump. River City Diesel starts with a cast-iron housing and performs extensive upgrades: internal porting, modified cam clearance, and a high-displacement cam. The result is significantly more oil volume and pressure than the factory HPOP — all while remaining a true bolt-in replacement.
Key Benefits
Up to 100 rwhp gain over a stock pump at 3000 RPM (proven on trucks with 225cc injectors)
Excellent match for stock injectors all the way up to 225cc conventional injectors
Improved injector response, atomization, and overall drivability
More consistent high-pressure oil delivery under load
Only upgraded cast-iron HPOP available on the market
Built for Reliability
Every Thumper 1 is remanufactured with all-new check valves, heads, and shafts. It includes the updated STC fitting and branch tube for a fresh, leak-free install (seal k[...]
River City Diesel Thumper 1 HPOP – 6.0 Powerstroke (2004.5–2007)
Looking to give your 6.0 Powerstroke real oil pressure and volume? The River City Diesel Thumper 1 High Pressure Oil Pump is the go-to drop-in upgrade for 2004.5–2007 6.0L Powerstroke trucks.
This is not just a remanufactured stock pump. River City Diesel starts with a cast-iron housing and performs extensive upgrades: internal porting, modified cam clearance, and a high-displacement cam. The result is significantly more oil volume and pressure than the factory HPOP — all while remaining a true bolt-in replacement.
Key Benefits
- Up to 100 rwhp gain over a stock pump at 3000 RPM (proven on trucks with 225cc injectors)
- Excellent match for stock injectors all the way up to 225cc conventional injectors
- Improved injector response, atomization, and overall drivability
- More consistent high-pressure oil delivery under load
- Only upgraded cast-iron HPOP available on the market
Built for Reliability Every Thumper 1 is remanufactured with all-new check valves, heads, and shafts. It includes the updated STC fitting and branch tube for a fresh, leak-free install (seal kit sold separately).
Whether you’re keeping your truck mostly stock or building a solid street performer, the Thumper 1 gives your injectors the oil supply they need without the complexity or cost of dual HPOP setups.
Fitment 2004.5 – 2007 Ford 6.0L Powerstroke
What’s Included
- River City Diesel Thumper 1 HPOP
- Updated STC fitting
- Branch tube
Notes
- HPOP seal kit sold separately
- Core charge applies
- 1-Year Warranty
Q
Clint mueller • 05/17/2025, 0:14:34 AM
Do you have any units in stock or Are they on back order?
A
05/19/2025, 4:01:15 PM
It can ship in a few weeks time. Still out of stock as of today.
Q
Mitch • 09/10/2025, 2:52:48 AM
When will this thumper 1 pump be in stock. And can a thumper 2 work in stock truck with stock injectors from Warren?
A
09/15/2025, 6:55:54 PM
Will be a few more weeks before we get back in stock. You can run a Thumper 2. Will just need to add a couple more quarts of engine oil to the engine.
Proposition 65 Warning Information -
P65Warnings.ca.gov
Fits: 6.0 Powerstroke 2004.5-2007