Engine Ford 99E

The 4.0-liter V6 engine Ford 99E or 4.0 SOHC was produced in Germany from 1997 to 2010 and was installed on the second, third and fourth generations of the popular Explorer SUV. A similar engine, but with its own index, was installed on the fifth Mustang and Ranger pickup truck.

Cologne V6 family: BRF, 99E, 99X.


Production years 1997 – 2010
Displacement, cc 3996
Fuel system distributed injection
Power output, hp 210 – 215
Torque output, Nm 344
Cylinder block cast iron V6
Block head aluminum 12v
Cylinder bore, mm 100.3
Piston stroke, mm 84.3
Compression ratio 9.7
Features SOHC
Hydraulic lifters yes
Timing drive chain
Phase regulator no
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 4.7
Fuel type petrol
Euro standards EURO 2/3
Fuel consumption, L/100 km (for Ford Explorer 2007)
— city
— highway
— combined
Engine lifespan, km ~300 000
Weight, kg 214

The engine was installed on:

  • Ford Explorer 2 (U105) in 1997 – 2003; Explorer 3 (U152) in 2000 – 2005; Explorer 4 (U251) in 2005 – 2010.

Disadvantages of the Ford 99E engine

  • The most famous problem with this power unit is the unreliable timing chain.
  • Moreover, the problem is not in the chains themselves, but simply in the tensioners and guides falling apart.
  • At high mileage, severe wear of the valve guides is regularly encountered.
  • If you use low-quality oils, the hydraulic compensators will begin to knock by 200,000 km.
  • Weak points also include short-lived gaskets and a lubricant pressure sensor.

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