6.0 Power Stroke: years, specs & known problems

By CarWhere Research · Updated

The 6.0 Power Stroke is the Navistar-built V8 turbo-diesel in 2003–2007 Super Duty pickups, 2003–2005 Excursions and E-Series vans, rated 325 hp. It is best known for head-gasket, EGR-cooler, oil-cooler and FICM failures, and a 2013 class settlement covered owners of 2003–2007 models. Repair history is the key check.

Ford replaced the 7.3 with the 6.0-liter Power Stroke during the 2003 model year. Navistar designed and built it from the VT365 family, with four valves per cylinder, HEUI injectors controlled by a fuel injection control module (FICM), a variable-geometry turbo and an EGR system with a liquid-cooled EGR cooler.

The engine’s warranty record led to consolidated owner class actions that settled in 2013. Many surviving trucks have had head studs, upgraded coolers and a rebuilt FICM fitted; a well-documented repaired 6.0 is a very different purchase from an untouched one.

6.0 Power Stroke at a glance

Ford 6.0L Power Stroke V8 turbo-diesel: model years, fuel and peak Ford-published output
EngineModel yearsFuelPeak hpPeak torque (lb-ft)Documented problemsRecalls
Ford 6.0L Power Stroke V8 turbo-diesel2003–2007Diesel32557042

CarWhere lists 4 documented problems and 2 NHTSA recalls for the 6.0 Power Stroke, each with a source.

6.0 Power Stroke specifications

6.0 Power Stroke: design facts (2003–2007)
SpecificationValue
Displacement6.0 L (365 cu in nominal)[1]
Bore × stroke95 × 105 mm (3.74 × 4.13 in)[1]
Compression ratio18.0:1[1]
Block / headsCast iron / cast iron[1]
ValvetrainCam-in-block pushrod, 4 valves per cylinder[1]
Head fastenersFour 14 mm torque-to-yield bolts per cylinder[1]
Fuel systemHEUI unit injectors fired by a FICM, oil-actuated by a high-pressure oil pump[2]
TurboGarrett GT3782VA variable-geometry[1]
Transmissions5R110W TorqShift 5-speed automatic; ZF 6-speed manual (pickups)[1]
Designed / built byInternational (Navistar), based on the VT365[1]

6.0 Power Stroke horsepower and torque by year

6.0 Power Stroke: Ford-published horsepower (hp) and torque (lb-ft) by model year and application
Model yearsApplicationHorsepower (hp)Torque (lb-ft)Source
2003–2004Super Duty pickup325560[1]
2005–2007Super Duty pickup325570[1]
2004–2010E-350/E-450235440[1]

"—" means we could not confirm the figure from a primary source.

Which Fords have the 6.0 Power Stroke?

Ford models and model years offered with the 6.0 Power Stroke
ModelModel yearsNotes
F-250/F-350/F-450/F-550 Super Duty2003–2007Introduced partway through the 2003 model year
Excursion2003–2005
E-350/E-450 vans and cutaways2004–2010
F-650/F-750 medium-duty2003–2008

6.0 Power Stroke problems and what to check

Head gasket failure and torque-to-yield head bolts (2003–2007)

Major repair

The 6.0 clamps each cylinder with four torque-to-yield bolts. Excess cylinder pressure from tuning, or heat and pressure from a failed EGR or oil cooler, can stretch them and blow head gaskets. The common permanent fix is head studs with new gaskets.[2][1][3]

Symptoms

  • Coolant loss with no visible leak
  • Pressurized or bubbling coolant reservoir
  • White exhaust smoke

Check before buying

  • Ask for invoices showing head studs and gaskets
  • Pressure-test the cooling system
  • Check for an aftermarket tune

Clogged oil cooler and failed EGR cooler (2003–2007)

Major repair

The engine-oil cooler can clog on its coolant side, which starves the downstream EGR cooler of flow. An overheated EGR cooler can crack and push coolant into the exhaust or intake. The 2003 round EGR cooler is considered less failure-prone than the 2004–2007 square design.[2]

Symptoms

  • White steam-like smoke at startup
  • Coolant loss
  • Engine overheating under load

Check before buying

  • Compare engine oil and coolant temperatures with a scan tool
  • Look for coolant in the intake or exhaust
  • Ask whether the oil and EGR coolers were replaced together

FICM (fuel injection control module) failure (2003–2007)

Moderate

The FICM, mounted on the driver-side valve cover, supplies the voltage that fires the injectors. Heat and vibration wear it out, and low battery voltage makes problems worse. A weak FICM causes hard starts, rough running and stalling.[2]

Symptoms

  • Hard or no start, especially cold
  • Rough idle or misfire
  • Stalling

Check before buying

  • Have FICM output voltage tested
  • Load-test both batteries
  • Check whether the module has been rebuilt or replaced

Turbo vane sticking and injector stiction (2003–2007)

Moderate

Soot can make the variable-geometry turbo vanes stick, and 2003–2005 engines used a turbo oil drain tube that Ford updated for 2006–2007. HEUI injectors are sensitive to oil and fuel quality and can stick, particularly when the oil is overdue.[2]

Symptoms

  • Slow boost and lazy throttle response
  • Rough running on cold start that clears when warm
  • Turbo noise or oil leaks at the drain tube

Check before buying

  • Ask for oil-change records
  • Listen for turbo noise and check boost with a scan tool

6.0 Power Stroke recalls

NHTSA safety recalls related to the 6.0 Power Stroke (campaign numbers link to NHTSA)
NHTSA campaignReportedVehiclesSummary
04V-3272004-072003 Super Duty pickups and Excursion with 6.0L dieselA loose engine ground stud for the negative battery cable could overheat the radio suppression strap and cause a fire.
05V-2702005-062004–2005 Super Duty, Excursion and E-Series with 6.0L dieselThe engine could stall without warning while driving and might not restart.

6.0 Power Stroke issues by model

The same engine shows up on these Ford known-issues pages, with model-specific details.

Related Ford research

Confirm a truck or car really has the 6.0 Power Stroke.

Engine, transmission and axle options are recorded against the VIN. The CarWhere build sheet decodes a Ford VIN into its factory record — powertrain, equipment groups and options as built. $9.99, instant.

Ford build sheet by VIN

Frequently asked questions

What years did the 6.0 Powerstroke have problems?

All 6.0 Super Duty years, 2003 through 2007, share the same weak points: head gaskets, oil and EGR coolers, and the FICM. Some running changes helped, such as an updated turbo oil drain tube for 2006–2007, but no model year is free of the core issues.

Is a 6.0 Powerstroke a good engine?

An original 6.0 carries real risk. One with documented head studs, replaced oil and EGR coolers and a healthy FICM can be dependable, so the repair paperwork matters more than the model year.

How much horsepower does a 6.0 Powerstroke have?

In Super Duty pickups it is rated 325 hp, with 560 lb-ft for 2003–2004 and 570 lb-ft for 2005–2007. E-Series vans used a lower 235 hp rating.

Was there a 6.0 Powerstroke class action settlement?

Yes. Consolidated owner suits (In re Navistar 6.0L Diesel Engine Products Liability Litigation, N.D. Ill.) settled in 2013 for non-ambulance 2003–2007 Ford vehicles with the 6.0, paying $50 to $825 per eligible claim. Ford denied the allegations and the claim deadline was the end of 2013.

What does bulletproofing a 6.0 mean?

It is shorthand for replacing the known weak parts: head bolts with studs, the oil cooler and EGR cooler with upgraded parts, and often the FICM. Ask exactly which parts were done and see the invoices.

Sources

Ratings are Ford-published figures as cited; descriptions are CarWhere’s own summaries of the sources below. Repair costs appear only where a source states them and vary by shop and region.

  1. 6.0L Power Stroke specs and applications — Diesel Hub (secondary reference)
  2. Common problems with the 6.0 Power Stroke — Diesel Hub (secondary reference)
  3. Ford, Navistar Diesel Engine Class Action Lawsuit Settlement — Top Class Actions

More Ford tools

Independent reference compiled by CarWhere — not affiliated with or endorsed by Ford Motor Company. Ford, Power Stroke, EcoBoost, Coyote and the model names are trademarks of their owner.