Ford 7.3L Power Stroke V8
Horsepower
210–275 hp
Torque
425–525 lb-ft
Years produced
1994–2003
Aspiration
Turbocharged
- Configuration
- V8, 7.3 L
- Aspiration
- Turbocharged
- Builder
- Navistar
- Designers
- Unknown
- Years
- 1994–2003
Offered in: Ford F-250 HD, Ford F-350, Ford Super Duty F-250, Ford Super Duty F-350
The 7.3-liter Power Stroke, known by its Navistar designation T444E, is a direct-injection turbodiesel V8 that replaced the IDI in Ford's heavy-duty pickups in mid-1994. Ford gave it the Power Stroke name. It powered pre-Super Duty F-250 HD and F-350 trucks and then the Super Duty line from 1999, and its ratings rose from 210 hp and 425 lb-ft at launch to 235 hp and 500 lb-ft in the late 1990s, and 250 to 275 hp and 525 lb-ft from 2001. It was replaced in Super Duty pickups by the 6.0-liter engine in 2003.
What made it successful
It combined a direct-injection turbodiesel's power with the reputation of its predecessor for durability, and it stayed in production for roughly a decade in Ford pickups. That long run created a large base of owners, parts, and shop experience.
Market position
It gave Ford a turbocharged direct-injection diesel to compete with the Dodge Cummins, and its ratings were competitive for the period. Sourced comparisons with GM and Dodge ratings are not yet included.
Rebuild Potential
Tier AEditorial opinion.
A long production run means parts, rebuild kits, and shop knowledge are easy to find, and the aftermarket is one of the deepest in the class. There is no particulate filter or urea system. Its common faults are documented and inexpensive to fix. Its main drawback is that well-kept trucks are getting older and cost more.
Best year ranges
- 1999-2003: Super Duty trucks with the later engine ratings; widely treated as the strongest years, but this is not confirmed by a primary source.
Known weak points
The camshaft position sensor wears from heat and age, causing stalls, no-start, or no tach movement while cranking.
Common fix: Replace with a Ford- or International-branded sensor; generic sensors are reported to be less reliable.
High-pressure oil leaks at the standpipes and dummy plugs cause long cranking and hard starts when hot.
Common fix: Replace with the updated standpipes and dummy plugs that use improved O-rings.
Common upgrade categories
- Updated standpipe and dummy plug kits
- Turbo rebuild kits and injector service
- Cooling and fuel system refresh
- Transmission service parts
- Bolt-on intake and exhaust within local legal limits
These engines predate modern diesel emissions systems, but rules still vary by state (for example California/CARB). Check local law and model-year requirements before modifying or swapping.
Sources
- Ford Super Duty (Wikipedia) (accessed 2026-09-18)
- Ford F-Series, ninth generation (Wikipedia) (accessed 2026-09-18)
- Navistar T444E engine (Wikipedia) (accessed 2026-09-18)