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Who builds the 6.7 Power Stroke engine?

The 6.7-liter Power Stroke is Ford's heavy-duty diesel used in the F-Series Super Duty trucks. It is built by Ford Motor Company, with historical collaboration from Navistar International (International). Ford has led the engine's development and ongoing production since its introduction in 2011.

Originally conceived as a joint effort with Navistar International around the turn of the decade, the engine has since been positioned as a Ford-internal program, retaining Navistar's early engineering input and component supply in its formative years while Ford maintains primary control of ongoing development and manufacturing.

Origins and collaboration

Key players and milestones in the engine's development and production are summarized below.

Ford Motor Company — leads design, development, and production of the 6.7 Power Stroke for Ford's Super Duty lineup.

Navistar International (International Truck and Engine) — contributed to early engineering and component supply as part of the original collaboration that produced the engine family.

In practice, Ford has maintained primary control of the engine's evolution and manufacturing in the years since its introduction.

Current status and impact

What this means for buyers and the trucks that use it:

Applications: Powers Ford F-250, F-350, and F-450 Super Duty trucks and chassis cabs equipped with the 6.7 Power Stroke.

Manufacturing: Ford's powertrain facilities oversee production, supported by a broad supplier network for components and assembly.

Ford continues to update the engine to meet emissions standards and enhance performance, maintaining the 6.7 Power Stroke as the flagship diesel option in the Super Duty lineup.

Context and takeaway

Across its history, the 6.7 Power Stroke has represented Ford's diesel strategy, balancing in-house engineering leadership with strategic partnerships. As of the latest information, Ford remains the primary builder and steward of the 6.7 Power Stroke program.

Summary: Ford Motor Company builds the 6.7 Power Stroke, with historical collaboration from Navistar International; the engine remains Ford's core diesel option for Super Duty trucks.

What is Ford's worst diesel engine?

Ford's 6.4L Power Stroke (2008-2010) is widely considered the company's worst diesel engine due to its numerous and complex problems, including cracked pistons, EGR failures, and issues with the DPF regeneration system. The 6.0L Power Stroke (2003-2007) also has a poor reputation, with common problems like head gasket failures and faulty oil coolers, but the 6.4L is often singled out as a more significant failure.
You can watch this video to learn about the 6.4L Power Stroke's issues: 58sDust Runners Automotive JournalYouTube · Jun 29, 2023
6.4L Power Stroke (2008-2010)

Reputation: Widely considered the worst Ford diesel engine due to a multitude of problems.
Key Issues:
- Cracked pistons: Caused by excessive heat from the DPF regeneration system, particularly affecting cylinders seven and eight.
- EGR problems: The exhaust gas recirculation system is prone to clogging and failure.
- Oil cooler issues: Leftover casting sand from manufacturing can clog the oil cooler, leading to oil overheating.
- Head bolts: Like its predecessor, this engine continued to have head bolt issues.
Outcome: The 6.4L was so problematic that it was the final straw in Ford's partnership with Navistar, leading Ford to develop its own engine (the 6.7L Power Stroke).

6.0L Power Stroke (2003-2007)

Reputation: Also has a very poor reputation, with many calling it a "money pit".
Key Issues:
- Head gaskets: Prone to failure.
- Oil cooler: Small coolant passages can easily clog, causing oil overheating.
- Injectors and turbochargers: Often experience failures.
- EGR system: Fails frequently.
Outcome: While problematic, many of the issues with the 6.0L can be addressed with aftermarket repairs, making it a "better option" than the 6.4L to some.

This video explains the top 5 issues with the 6.0L Power Stroke engine: 1mGetty's GarageYouTube · Jan 9, 2025

Who makes the 6.7 Power Stroke engine?

Ford makes the 6.7L Power Stroke engine, which debuted in 2011 and is designed for the Ford Super Duty lineup. It was the first Power Stroke engine developed and manufactured entirely by Ford, a change from previous models which were co-developed with Navistar.

Manufacturer: Ford Motor Company
Debut: 2011 model year
Vehicle: Ford Super Duty trucks (F-250, F-350, etc.)
Significance: The 6.7L Power Stroke was Ford's first in-house designed and built diesel engine.
Engineering: Ford designed the engine in collaboration with AVL of Austria.

What is the biggest problem with 6.7 Power Stroke?

The biggest problems with the 6.7 Powerstroke include fuel system issues, such as CP4 injection pump failure (especially on pre-2020 models), and emissions system problems like clogged EGR coolers and faulty EGT or NOx sensors. Other common concerns are leaks, often from the upper oil pan or the cold-side charge pipe, and issues with the high-pressure fuel pump.

This video explains some of the common problems with the 6.7 Powerstroke, including injection pump failure: 48s8020 AutomotiveYouTube · Dec 27, 2022
Fuel system

Injection pump failure: The Bosch CP4 injection pump on pre-2020 models is a major issue. It can fail due to metal-on-metal contact, sending metal shavings throughout the fuel system and causing extensive damage to injectors, lines, and regulators.
Fuel filter housing: The secondary fuel filter housing can leak, particularly the plastic fuel filter housing fitting, which can also be a fire hazard if it breaks.

Emissions system

EGR cooler: The EGR cooler is prone to clogging from carbon deposits, which can lead to a loss of power and may eventually require replacement.
EGT and NOx sensors: These sensors are known to fail, which can trigger a check engine light or even cause the vehicle to shut down. The middle EGT sensors are the most common failure points.

You can watch this video to learn more about common EGR cooler problems: 58sPower Stroke MaintenanceYouTube · May 12, 2023
Leaks and other issues

Oil leaks: A significant number of leaks are reported, especially from the upper oil pan and front cover, often caused by a clogged crankcase filter that builds excessive pressure.
Charge pipe failure: The cold-side charge pipe is a common failure point that can leak, leading to a loss of boost pressure.
Exhaust manifold: The exhaust manifold is infamous for cracking, which can cause exhaust leaks, a ticking noise, and a loss of performance.
Turbocharger issues: Early models had issues with the turbocharger's ceramic ball bearings, though updates were made in later years.

This video shows examples of Ford 6.7 Powerstroke problems, including rad leaks and EGR issues: 1mJT2JZYouTube · Mar 8, 2024

Where are 6.7 Power Stroke engines made?

The 6.7L Power Stroke diesel engine is made in Ford's Chihuahua Engine Plant in Mexico. It is the first Power Stroke engine to be developed and manufactured entirely by Ford, and the Mexican plant was specifically built to produce it.

You can watch this video to learn about the Ford Kentucky Truck Plant assembly: 13sCars GarageYouTube · Jan 21, 2014

The 6.7L Power Stroke engine is produced at the Ford's Chihuahua Engine Plant in Mexico.
This engine was developed entirely in-house by Ford for its F-Series Super Duty trucks.
The Chihuahua plant was inaugurated in 2009 to produce the engine for the 2011 model year Super Duty trucks.

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.