Engine BMW N73B60

The 6.0-liter 12-cylinder BMW N73B60 engine was assembled from 2002 to 2008 and was installed only on 7-Series sedans in the back of the E65, including the extended modification of the E66. The N73B60 was the first direct injection petrol engine in BMW history.

Other modifications of N73: N73B68.

The engine was installed on:

  • BMW 7-Series E65 in 2002 – 2008.

Specifications

Production years 2002-2008
Displacement, cc 5972
Fuel system direct injection
Power output, hp 445
Torque output, Nm 600
Cylinder block aluminum V12
Block head aluminum 48v
Cylinder bore, mm 89
Piston stroke, mm 80
Compression ratio 11.3
Features Valvetronic
Hydraulic lifters yes
Timing drive chain
Phase regulator double VANOS
Turbocharging no
Recommended engine oil 5W-40
Engine oil capacity, liter 8.5
Fuel type 98
Euro standards EURO 4
Fuel consumption, L/100 km (for BMW 760Li 2004)
— city
— highway
— combined
20.2
9.5
13.4
Engine lifespan, km ~320 000

Disadvantages of the N73B60 engine

  • The main problems are associated with rapid coking due to the direct injection system;
  • The Double VANOS system is a modest resource here, sometimes less than 150,000 km;
  • Still often there are vibrations at low speeds due to a malfunction of Valvetronic;
  • After 150,000 km of run, they often stretch here and require replacement of the timing chain;
  • The weaknesses of this motor also include a tendency to leaks and oil consumption.

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