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Looking for a high pressure oil pump that can actually keep up with big injectors on your 6.0 Powerstroke? The River City Diesel Thumper II HPOP (part #1735370002) is the answer.
This is the highest-displacement single HPOP on the market. It’s engineered for racing, competition, or heavily modified street trucks that demand serious oil volume. The Thumper II features an internally ported cast iron housing, modified cam clearance, and a new high-displacement cam. It delivers approximately 30% more oil volume than the Thumper I (Stage 1), giving your injectors the high-pressure oil supply they need to perform at their best.
Built in the USA on a remanufactured base with all-new internals (check valves, heads, and shafts), the Thumper II offers excellent reliability and flow for high-horsepower 6.0L builds.
Key Features & Benefits:
- Highest flowing single HPOP available — supports more oil demand than any other single pump on the market
- ~30% more oil volume than the Thumper I
- Supports 225cc to 300cc conventional injectors (recommended); capable of supporting up to 430cc hybrid injectors in extreme applications
- Internally ported for improved oil flow
- New high-displacement cam installed
- All-new check valves, heads, and shafts for long-term durability
- Includes STC fitting and branch tube
- Drop-in upgrade for properly configured 2004.5–2007 6.0L Powerstroke trucks
Recommended For: Racing, competition, or heavily modified street applications with large injectors.
Not Recommended For: Stock or mild builds with injectors smaller than 205cc (this is a high-volume fixed-geometry pump).
Fitment: 2004.5 – 2007 Ford 6.0L Powerstroke (Super Duty F-250/F-350, Excursion, and compatible E-Series). Some early 2004.5 models may require late-style high pressure oil system updates (STC fitting, etc.).
What’s Included:
- River City Diesel Thumper II HPOP
- STC fitting / branch tube
Additional Notes:
- Seal kit sold separately (strongly recommended during install)
- Core charge applies — return your old HPOP core for refund
- 1-Year Warranty
This pump is not for the faint of heart — it’s built for those who are serious about making big power with their 6.0 Powerstroke.
Looking for a high pressure oil pump that can actually keep up with big injectors on your 6.0 Powerstroke? The River City Diesel Thumper II HPOP (part #1735370002) is the answer.
This is the highest-displacement single HPOP on the market. It’s engineered for racing, competition, or heavily modified street trucks that demand serious oil volume. The Thumper II features an internally ported cast iron housing, modified cam clearance, and a new high-displacement cam. It delivers approximately 30% more oil volume than the Thumper I (Stage 1), giving your injectors the high-pressure oil supply they need to perform at their best.
Built in the USA on a remanufactured base with all-new internals (check valves, heads, and shafts), the Thumper II offers excellent reliability and flow for high-horsepower 6.0L builds.
Key Features & Benefits:
Highest flowing single HPOP available — supports more oil demand than any other single pump on the market
~30% more oil volume than the Thumper I
Supports 225cc to 300cc conventional injectors (recommended); capable of supporting up to 430cc hybrid injectors in extreme applications
Interna[...]
Looking for a high pressure oil pump that can actually keep up with big injectors on your 6.0 Powerstroke? The River City Diesel Thumper II HPOP (part #1735370002) is the answer.
This is the highest-displacement single HPOP on the market. It’s engineered for racing, competition, or heavily modified street trucks that demand serious oil volume. The Thumper II features an internally ported cast iron housing, modified cam clearance, and a new high-displacement cam. It delivers approximately 30% more oil volume than the Thumper I (Stage 1), giving your injectors the high-pressure oil supply they need to perform at their best.
Built in the USA on a remanufactured base with all-new internals (check valves, heads, and shafts), the Thumper II offers excellent reliability and flow for high-horsepower 6.0L builds.
Key Features & Benefits:
- Highest flowing single HPOP available — supports more oil demand than any other single pump on the market
- ~30% more oil volume than the Thumper I
- Supports 225cc to 300cc conventional injectors (recommended); capable of supporting up to 430cc hybrid injectors in extreme applications
- Internally ported for improved oil flow
- New high-displacement cam installed
- All-new check valves, heads, and shafts for long-term durability
- Includes STC fitting and branch tube
- Drop-in upgrade for properly configured 2004.5–2007 6.0L Powerstroke trucks
Recommended For: Racing, competition, or heavily modified street applications with large injectors.
Not Recommended For: Stock or mild builds with injectors smaller than 205cc (this is a high-volume fixed-geometry pump).
Fitment: 2004.5 – 2007 Ford 6.0L Powerstroke (Super Duty F-250/F-350, Excursion, and compatible E-Series). Some early 2004.5 models may require late-style high pressure oil system updates (STC fitting, etc.).
What’s Included:
- River City Diesel Thumper II HPOP
- STC fitting / branch tube
Additional Notes:
- Seal kit sold separately (strongly recommended during install)
- Core charge applies — return your old HPOP core for refund
- 1-Year Warranty
This pump is not for the faint of heart — it’s built for those who are serious about making big power with their 6.0 Powerstroke.
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