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Thumbnail Filmstrip of 2004.5-2007 6.0L Powerstroke Thumper II HPOP River City Diesel 1735370002 Images
High-volume oil pressure for big-injector 6.0L builds.
The River City Diesel (RCD) Thumper II is a high-displacement high-pressure oil pump (HPOP) for 2005–2007 Ford F-Series 6.0L Powerstroke trucks. The 6.0L uses high-pressure engine oil to fire its injectors, and larger performance injectors need more oil volume than the factory pump was designed to supply. The Thumper II is built to keep up, supporting up to 300cc conventional injectors.
Built for volume.
Each Thumper II is internally ported for improved oil flow and modified for cam clearance, then fitted with a new high-displacement cam. RCD says its HPOPs offer the highest displacement in the industry.
Remanufactured with new internals.
RCD remanufactures its pumps with all-new check valves, heads and shafts for long-lasting performance, and says it won’t sacrifice quality for a lower price.
Key Features
- High-displacement HPOP for large-injector builds
- Supports up to 300cc conventional injectors
- Internally ported for increased oil flow
- Modified for cam clearance with a new high-displacement cam
- Remanufactured with all-new check valves, heads and shafts
- Fits 2005–2007 Ford F-Series 6.0L Powerstroke only
What Problem Does This Solve?
- Low injection control pressure with large injectors. Bigger injectors use more high-pressure oil on every injection event. A stock HPOP can struggle to maintain injection control pressure (ICP) under load, limiting power and causing poor running. The Thumper II’s added displacement helps keep ICP where it needs to be.
- Power left on the table. If your HPOP can’t keep up, your injectors can’t deliver their full potential. The Thumper II supplies the oil volume needed to support high-horsepower injector builds.
Is This Pump Right for You?
The Thumper II is designed for 6.0L trucks running large performance injectors. RCD does not recommend it with injectors smaller than 205cc. If you’re running stock or mild injectors, the RCD Thumper I or a stock replacement HPOP is a better fit.
Installation Tip
The HPOP’s snap-to-connect (STC) fitting is a well-known 6.0L failure point. If the pump is coming out, it’s the ideal time to replace the STC fitting and seals. Ask us whether your pump ships with a new STC fitting: if it does, the Alliant AP0099 installation kit covers the seals; if not, the Alliant AP0098 kit adds an updated STC fitting.
Fitment
Fits 2005–2007 Ford F-Series 6.0L Powerstroke only. Will not fit 2003–2004 engines, which use a different HPOP design.
High-volume oil pressure for big-injector 6.0L builds.
The River City Diesel (RCD) Thumper II is a high-displacement high-pressure oil pump (HPOP) for 2005–2007 Ford F-Series 6.0L Powerstroke trucks. The 6.0L uses high-pressure engine oil to fire its injectors, and larger performance injectors need more oil volume than the factory pump was designed to supply. The Thumper II is built to keep up, supporting up to 300cc conventional injectors.
Built for volume.
Each Thumper II is internally ported for improved oil flow and modified for cam clearance, then fitted with a new high-displacement cam. RCD says its HPOPs offer the highest displacement in the industry.
Remanufactured with new internals.
RCD remanufactures its pumps with all-new check valves, heads and shafts for long-lasting performance, and says it won’t sacrifice quality for a lower price.
Key Features
High-displacement HPOP for large-injector builds
Supports up to 300cc conventional injectors
Internally ported for increased oil flow
Modified for cam clearance with a new high-displacement cam
Remanufactured with all-new check va[...]
High-volume oil pressure for big-injector 6.0L builds.
The River City Diesel (RCD) Thumper II is a high-displacement high-pressure oil pump (HPOP) for 2005–2007 Ford F-Series 6.0L Powerstroke trucks. The 6.0L uses high-pressure engine oil to fire its injectors, and larger performance injectors need more oil volume than the factory pump was designed to supply. The Thumper II is built to keep up, supporting up to 300cc conventional injectors.
Built for volume.
Each Thumper II is internally ported for improved oil flow and modified for cam clearance, then fitted with a new high-displacement cam. RCD says its HPOPs offer the highest displacement in the industry.
Remanufactured with new internals.
RCD remanufactures its pumps with all-new check valves, heads and shafts for long-lasting performance, and says it won’t sacrifice quality for a lower price.
Key Features
- High-displacement HPOP for large-injector builds
- Supports up to 300cc conventional injectors
- Internally ported for increased oil flow
- Modified for cam clearance with a new high-displacement cam
- Remanufactured with all-new check valves, heads and shafts
- Fits 2005–2007 Ford F-Series 6.0L Powerstroke only
What Problem Does This Solve?
- Low injection control pressure with large injectors. Bigger injectors use more high-pressure oil on every injection event. A stock HPOP can struggle to maintain injection control pressure (ICP) under load, limiting power and causing poor running. The Thumper II’s added displacement helps keep ICP where it needs to be.
- Power left on the table. If your HPOP can’t keep up, your injectors can’t deliver their full potential. The Thumper II supplies the oil volume needed to support high-horsepower injector builds.
Is This Pump Right for You?
The Thumper II is designed for 6.0L trucks running large performance injectors. RCD does not recommend it with injectors smaller than 205cc. If you’re running stock or mild injectors, the RCD Thumper I or a stock replacement HPOP is a better fit.
Installation Tip
The HPOP’s snap-to-connect (STC) fitting is a well-known 6.0L failure point. If the pump is coming out, it’s the ideal time to replace the STC fitting and seals. Ask us whether your pump ships with a new STC fitting: if it does, the Alliant AP0099 installation kit covers the seals; if not, the Alliant AP0098 kit adds an updated STC fitting.
Fitment
Fits 2005–2007 Ford F-Series 6.0L Powerstroke only. Will not fit 2003–2004 engines, which use a different HPOP design.
Q
Aaron • 03/11/2025, 5:22:58 PM
Hello, I'm looking for larger nozzles and a larger pump for my new engine. The engine has a sharp camshaft for torque and a large turbo from KC. What can you recommend? The HPOP Stage is too big, right?
A
03/13/2025, 7:44:30 PM
Call our sales team to go over your options 615-962-8291
Q
Daoud El-massri • 11/02/2025, 0:16:17 AM
The truck i have has a stage 2 injectors with matching injectors. Was told by previous owner it was boolit proof.was told it make over 500-600hp. Is a HPOP Thumper11 to mutch oil supply for this motor.
A
11/04/2025, 2:31:52 PM
Thumper 1 should work just fine. If you choose the Thumper 2 it will not be an issue either.
Proposition 65 Warning Information -
P65Warnings.ca.gov
Fits: 6.0 Powerstroke 2004.5-2007