Last reviewed: October 8, 2026
Ford did not replace every 2020-and-newer 6.7L Power Stroke high-pressure fuel pump with a Denso HP4. Ford recall documents identify a Bosch CP4 RP7 pump in certain 2020–2022 Super Duty and 2021–2022 medium-duty trucks, and Ford states that the RP8 variant replaced the RP7 in production on August 23, 2021. A disaster-prevention-kit decision therefore starts with the VIN, production date, installed pump, open recalls, and verified kit flow path—not the model year alone.
Key Takeaways
The correct question is whether a specific truck and pump are compatible with a specific contamination-control system, not whether every 2020+ Power Stroke needs the same kit.
- Ford safety recall 24S78 covers certain 2020–2022 F-250 through F-600 trucks and certain 2021–2022 F-650 and F-750 trucks equipped with the affected RP7 high-pressure pump.
- Ford attributes the recall condition to aged-biodiesel deposits accumulating on pump drivetrain roller components, which can cause extended cranking, a no-start, or loss of motive power.
- Ford replaced the RP7 with the RP8 variant in production on August 23, 2021; a model-year label does not reveal the exact pump or recall status.
- A bypass or disaster-prevention kit cannot complete a recall, remove internal deposits, repair a worn pump, or clean an already contaminated system.
- Filtration and disaster-prevention systems solve different problems: upstream filters manage incoming contamination, while a correctly designed prevention system attempts to limit downstream damage during a covered pump failure.
First, Correct the 2020+ Pump Record
The blanket claim that every 2020–2026 6.7L Power Stroke uses a Denso HP4 conflicts with Ford's published RP7 and RP8 documentation.
| Vehicle or production group | What Ford documents | Owner decision |
|---|---|---|
| Certain 2020–2022 Super Duty trucks | Vehicles equipped with the RP7 diesel high-pressure pump are included in recall 24S78 | Check the VIN in Ford's recall system before evaluating aftermarket protection |
| Certain 2021–2022 F-650 and F-750 trucks | Vehicles with the affected RP7 pump are also included in recall 24S78 | Use the VIN and Ford service record; do not assume pickup fitment applies to a medium-duty truck |
| Production after August 23, 2021 | Ford states that the RP8 variant replaced the RP7 and increased roller-shoe and tappet-body clearances to improve fuel flow and cooling | Confirm whether an aftermarket kit explicitly supports the installed RP8 configuration |
| 2023–2026 trucks | The recall documents do not support labeling every later truck as Denso HP4 | Verify the pump through VIN-specific Ford parts data and the physical pump before ordering |
Ford changed hardware and calibration across the 6.7L platform, so owners comparing 6.7L Power Stroke generations should treat pump identification as a VIN-level question rather than a forum shorthand.
What Ford Recall 24S78 Actually Covers
Recall 24S78 addresses a loss-of-motive-power risk in specific vehicles where aged-biodiesel deposits can accumulate on RP7 pump drivetrain roller components.
The recall population includes approximately 295,449 vehicles: certain 2020–2022 F-250, F-350, F-450, F-550, and F-600 trucks plus certain 2021–2022 F-650 and F-750 trucks. Ford lists affected build dates from February 19, 2019 through August 23, 2021 for Kentucky Truck production, April 3, 2019 through August 23, 2021 for Ohio Super Duty production, and May 14, 2019 through August 23, 2021 for the affected medium-duty production.1
Ford's stated remedy is a free powertrain-control-module software update. The software remedy does not mean that every affected pump contains metal, and it does not turn an aftermarket kit into a recall substitute. Owners should complete the open recall first and retain the service record.
| Truck status | Correct first action | Kit decision |
|---|---|---|
| VIN shows an open 24S78 recall | Schedule the Ford recall remedy | Do not use an aftermarket kit as a substitute for recall completion |
| Extended crank or loss of power is already present | Have the truck diagnosed before further towing or long-distance use | A kit cannot repair deposits, mechanical wear, or an existing pressure fault |
| No open recall and no symptoms | Identify the pump and review maintenance and warranty status | Consider only a kit whose instructions name the installed pump and exact truck configuration |
| Metal contamination is confirmed | Stop driving and define the contamination boundary | The truck needs repair and cleaning, not a prevention-only installation |
Symptoms That Require Diagnosis on a 2020+ Truck
Extended cranking, a no-start, sudden power loss, rail-pressure faults, or confirmed metal justify diagnosis, but none of those observations identifies the pump variant or failed component by itself.
- Extended crank or intermittent no-start: record actual rail pressure, commanded rail pressure, low-side supply pressure, fuel temperature, and battery cranking speed.
- Loss of motive power: save codes and freeze-frame data, check recall status, and inspect low-side supply before authorizing a pump.
- P0087 or pressure mismatch: test filters, supply pressure, air intrusion, injector leak-off, pressure-control valves, sensor rationality, and pump output.
- Water-in-fuel warning: stop heavy use, drain and inspect the separator according to Ford instructions, and determine whether contaminated fuel reached the high-pressure side.
- Metallic debris: stop restarting the engine until a qualified technician determines whether the pump, rails, injectors, return circuit, or tank are contaminated.
The diagnostic logic behind high-pressure-pump warning signs still applies, but the pump identity and model-year strategy must be corrected before those findings are interpreted.
Fuel Quality and Maintenance Still Matter
Clean, specification-compliant fuel and unrestricted low-pressure supply protect every 6.7L common-rail system, regardless of whether the truck carries an RP7, RP8, or another verified pump configuration.
| Risk | Why it matters | Practical response |
|---|---|---|
| Aged biodiesel | Ford associates aged-biodiesel deposits with the RP7 recall condition | Complete applicable recall work and avoid storing questionable fuel for extended periods |
| Water contamination | Water can reduce lubrication, promote corrosion, and damage close-tolerance pump and injector parts | Respond immediately to the water-in-fuel warning and investigate repeated accumulation |
| Restricted or incorrect filters | Low inlet flow can starve the high-pressure pump under load | Use the correct filter specification and verify supply pressure when symptoms appear |
| Gasoline or DEF in the diesel tank | Misfueling can remove lubricating protection, cause corrosion, and spread damage rapidly | Do not start the engine; arrange tank and fuel-system service |
Owners troubleshooting diesel fuel-delivery problems should prove filter condition and low-side pressure before treating an aftermarket protection product as the first repair.
Filtration and Disaster Prevention Do Different Jobs
Upstream filtration manages fuel entering the pump, while a compatible disaster-prevention system is intended to limit debris movement after a covered internal pump failure.
| Protection type | What it can address | What it cannot do |
|---|---|---|
| Correctly specified primary and secondary fuel filters | Water and particulate contamination arriving from the tank | Capture every metal particle generated downstream inside the high-pressure pump |
| Aftermarket filter housing or service-access upgrade | Housing durability or serviceability, depending on design | Automatically improve filtration efficiency without a verified filter specification |
| Pump-specific bypass or disaster-prevention kit | Specified contamination paths shown in the manufacturer's flow diagram | Repair the pump, remove aged-biodiesel deposits, complete a recall, or clean existing debris |
The seller-listed 2011–2025 upper fuel-filter upgrade kit should be evaluated for housing construction, replacement-filter specification, warranty, and exact model fitment; its broad listing title is not a substitute for VIN confirmation.
When a 2020+ Disaster-Prevention Kit Is Worth Considering
A kit is worth considering only when the installed pump is positively identified, the manufacturer explicitly supports that pump and vehicle, recall work is complete, and no contamination is already present.
- Run the VIN through Ford's recall lookup and complete open recall work.
- Confirm the production date and installed high-pressure-pump identification.
- Obtain the kit manufacturer's pump-specific fitment statement and flow diagram.
- Verify whether pickup, cab-and-chassis, and medium-duty applications use different plumbing.
- Ask how the installation affects the factory fuel-system warranty and future dealer diagnosis.
- Do not install a prevention kit over an unresolved long-crank, low-pressure, no-start, or contamination complaint.
The seller-listed 2011–2025 CP4 bypass and disaster-prevention kit spans several Ford pump and production changes, so buyers should obtain written confirmation for the VIN and installed pump before ordering.
Cost and Priority: Recall, Diagnosis, or Prevention?
The lowest-cost action is not always a kit: an open recall may be repaired at no charge, while an already symptomatic truck needs diagnosis before any prevention purchase.
| Situation | Typical priority | Planning cost |
|---|---|---|
| Open Ford 24S78 recall | Complete Ford's recall remedy | No charge for the recall remedy |
| Intermittent crank or rail-pressure complaint without confirmed metal | Scan, supply-pressure testing, fuel-quality inspection, and controlled diagnosis | Often roughly $150–$500 before repairs, depending on shop rate and test time |
| Localized pump or control repair without widespread contamination | Correct the cause and replace affected parts | Often roughly $2,500–$5,500, depending on pump, lines, labor, and programming |
| Metal has reached injectors, rails, return circuit, or tank | Define and remove the complete contamination path | Often roughly $8,000–$15,000 or more, depending on parts strategy and labor rate |
These amounts are conservative planning ranges, not Ford warranty times or guaranteed repair quotes. A prevention kit may reduce exposure to a larger repair only when its design matches the pump and it is installed before contamination occurs.
Frequently Asked Questions
These answers address the pump-identification, recall, filtration, and kit-fitment questions that matter most to 2020-and-newer owners.
Did every 2020+ 6.7L Power Stroke switch to a Denso HP4?
No. Ford documents Bosch CP4 RP7 pumps in certain 2020–2022 vehicles and states that the RP8 variant replaced the RP7 in production on August 23, 2021. Later trucks still require VIN-specific pump verification.
What is the difference between the RP7 and RP8?
Ford states that the RP8 increased roller-shoe and tappet-body clearances to improve fuel flow and cooling in the tappet area. That design change does not prove that every RP8-compatible aftermarket kit fits every later truck.
Which trucks are covered by recall 24S78?
The recall covers certain 2020–2022 F-250 through F-600 trucks and certain 2021–2022 F-650 and F-750 trucks equipped with the affected RP7 pump. The VIN lookup, not the model year alone, confirms inclusion.
Does completing recall 24S78 eliminate every fuel-system risk?
No. The recall addresses the identified RP7 aged-biodiesel-deposit condition through a PCM software update. Water, incorrect fuel, restricted filters, electrical faults, sensor faults, mechanical wear, and misfueling still require normal prevention and diagnosis.
Is better filtration the same as a disaster-prevention kit?
No. Filtration primarily manages contamination arriving from the tank, while a compatible prevention kit targets specified debris paths created by an internal pump failure. Neither system repairs an already damaged pump.
How do I confirm whether a disaster-prevention kit fits my truck?
Match the VIN, production date, pump identification, truck configuration, hose routing, and manufacturer instructions. Obtain written confirmation when a listing spans RP7, RP8, pickup, cab-and-chassis, or medium-duty applications.
Official Sources
Ford and NHTSA documents support the recall population, failure mechanism, production change, and current 6.7L fuel-system descriptions used in this guide.
Choose Protection by Pump, Not by Headline
A prevention product is useful only when its documented flow path and hardware match the truck's installed high-pressure pump.
The CP4 bypass and disaster-prevention kit collection contains multiple year ranges, but each buyer should verify the VIN and pump before purchase.
About the Author
John Lee writes about diesel drivetrain durability, fuel-system diagnosis, and fitment decisions across Power Stroke, Cummins, and Duramax applications.
John Lee
Mechanical Engineer | 10+ Years Experience
