Ford’s 6.7 Power Stroke does not have an injection pump in the old-school sense. It has a high-pressure fuel pump, a Bosch CP4.2, whose only job is keeping the fuel rails packed at very high pressure while the engine computer fires each injector.
It is a small pump with a big reputation, and that reputation usually walks into the shop before the pump does. This page covers the years, explains how the CP4.2 works, lists the warning signs and tells you what to do when one quits.
We can help assess service options for CP4.2 pumps on the bench.
Which Pump Is on My Power Stroke?
| Model years | Engine | High-pressure pump | What to know |
|---|---|---|---|
| 2011-2019 | 6.7 Power Stroke | Bosch CP4.2 | Two plungers; sensitive to fuel quality, water and air |
| Later 6.7 model revisions | 6.7 Power Stroke | Verify installed high-pressure pump | Complete OEM and Bosch numbers determine the configuration |
| 2018-2021 | 3.0 Power Stroke, F-150 | Bosch CP4 | |
| 1994.5-2007 | 7.3 and 6.0 Power Stroke | No high-pressure fuel pump | HEUI injectors; see our IDI page for how they differ |
Model years tell most of the story here, but the tag on the pump tells all of it. Read it before you order anything.
Did You Know? The CP4.2 is not a Ford exclusive. The same family fed the LML Duramax and the 2019-2020 6.7 Cummins, so all three big diesel pickup brands have spent time with it.
How the CP4.2 Works: Small, Mighty and Picky About Fuel
The CP4.2 squeezes fuel with two plungers riding a cam through roller tappets. Think of it as a two-cylinder engine running in reverse: instead of burning fuel to turn a crank, it turns a crank to squeeze fuel.
It is compact, efficient and quiet when it gets clean, dry fuel with good lubricity. It does not time anything; the computer and injectors decide when fuel goes in. Numbers start 0 445 010, and Bosch reman units start 0 986 437 4.
Shop Talk: HPFP means high-pressure fuel pump. On a common-rail engine it makes pressure; the injectors and the computer decide when fuel goes in.
Why CP4.2 Pumps Fail
The CP4.2 is lubricated by the diesel flowing through it. Water, air, poor lubricity or a tank of gasoline can wear the internals, and once metal starts shedding, it rides the fuel into the rails, lines and injectors.
Bench Notes: A CP4 failure is rarely just a pump job. When we find metal, the injectors, rails and lines need attention too, because a fresh pump in a contaminated system is a short-lived pump.
Our CP4 failure guide covers the warning signs in detail.
Conversion Options
Many owners look at replacement setups for peace of mind, from CP3 conversions to Stanadyne DCR pump kits. The right answer depends on how you use the truck and how much you want to spend. The CP4 vs CP3 conversion guide weighs the options.
Common 6.7 Power Stroke Pump Problems
- Low rail pressure codes such as P0087, with hard starts or crank-no-start.
- Water in the fuel. The water-in-fuel light is a warning, not a suggestion.
- Wrong fuel. If gasoline goes in the tank, do not start the engine. Have it towed and the system drained.
- Glitter in the filters. Metal flakes point to pump wear; park it and call us.
- Supply problems. A tired lift pump or clogged filter starves the HPFP. Our hard start and smoke guide helps narrow it down.
How to Tell What You Have
If your Super Duty is a 2011 or newer diesel, it has the 6.7 Power Stroke. Then read the pump tag: a Bosch number starting 0 445 010 is a CP4, and the full number tells us which calibration you need.
Owner’s Tip: The 6.7 has two fuel filters, one on the frame rail and one on the engine. Change both on schedule, drain the water separator when the light comes on and scan codes at the first stumble. Never open the high-pressure side; it can injure.
Ship It Right: Cap every port, drain what you can and bag the pump before boxing it. If it failed with metal in the filters, say so in your note.
Questions about Ford 6.7 Power Stroke High-Pressure Pump (Bosch CP4.2)
Does my 6.0 or 7.3 Power Stroke have this pump?
No. The 7.3 and 6.0 Power Stroke use HEUI injectors powered by high-pressure engine oil, so there is no high-pressure fuel pump to rebuild. Their injectors are a different job; see injector repair.
My CP4 failed. What else needs attention?
Usually the whole high-pressure side. Plan to inspect or replace the injectors, rails and lines, flush the tank and lines and fit new filters, or the replacement pump may meet the same end.
Should I switch to a CP3 or a DCR kit?
Many 6.7 owners do it for peace of mind, and the right answer depends on how you use the truck. Read the conversion guide and use the repair inquiry form to talk it through.
What affects the service scope for a 6.7 Power Stroke pump?
For Ford 6.7 Power Stroke High-Pressure Pump (Bosch CP4.2), the available path follows what inspection actually finds—not a universal rebuild recipe. DCT reviews the engine generation, original equipment, failure history and part number, whether the correct service parts and calibration information are available, and which work the customer chooses to authorize. Any exchange option is confirmed for the exact part rather than assumed from the family name. Explore how repair options are compared.
Your Super Duty was built to work. Keep the pump that feeds it working too. Start a Mail-In Repair or request a repair evaluation.