BMW N52

The BMW N52 is a naturally aspirated inline-six engine that was offered in two displacements, including a 2.5L variant and a 3.0L variant as the N52B25 and N52B30 respectively. Within both the N52B52 and N52B30 variants are further subvariants that were tuned to produce different amounts of power. Within the N52B52 family are 174bhp, 201bhp, and 215bhp sub-variants, while the N52B30 has 215 bhp, 228 bhp, 241 bhp, 255 bhp, 261 bhp, and 268 bhp variants.


Engine Displacement Power Torque Years
N52B25 2,497 cc (152.4 cu in) 130 kW (174 bhp)
at 5,800 rpm		 230 N⋅m (170 lb⋅ft)
at 3,500-5,000 rpm		 2005-2008
140 kW (188 bhp)
at 6,200 rpm		 240 N⋅m (175 lb⋅ft)
at 3,500 rpm		 2007-2010
150 kW (201 bhp)
at 6,400 rpm		 250 N⋅m (184 lb⋅ft)
at 2,750 rpm		 2007-2011
160 kW (215 bhp)
at 6,500 rpm		 250 N⋅m (184 lb⋅ft)
at 2,750-4,250 rpm		 2004-2013
N52B30 2,996 cc (182.8 cu in) 160 kW (215 bhp)
at 6,100 rpm		 270 N⋅m (199 lb⋅ft)
at 2,500-4,250 rpm		 2006-2010
280 N⋅m (207 lb⋅ft)
at 2,500-3,500 rpm		 2010-2011
170 kW (228 bhp)
at 6,500 rpm		 270 N⋅m (199 lb⋅ft)
at 2,750 rpm		 2007-2013
180 kW (241 bhp)
at 6,500 rpm		 310 N⋅m (229 lb⋅ft)
at 2,750 rpm		 2008-2011
190 kW (255 bhp)
at 6,600 rpm		 300 N⋅m (221 lb⋅ft)
at 2,500-4,000 rpm		 2010-2011
190 kW (255 bhp)
at 6,600 rpm		 310 N⋅m (229 lb⋅ft)
at 2,600 rpm		 2009-2015
195 kW (261 bhp)
at 6,600 rpm		 315 N⋅m (232 lb⋅ft) at
2,750-4,250 rpm		 2005-2009
200 kW (268 bhp)
at 6,650 rpm		 315 N⋅m (232 lb⋅ft) at
2,750 rpm		 2006-2010

Inside the motor by Dan Connor.

Starting September 2006, N52K (N52N) introduced some noticeable revisions made in following areas:

  • Cylinder head cover: Plastic Cover instead of the old alumnium cover
  • Camshafts
  • Crankshaft
  • Stem diameter of exhaust valves increased to 6 mm instead of 5 mm
  • Torsional vibration damper
  • Crankcase ventilation (revised version embedded onto the valve cover)
  • Hot-film air mass meter (HFM)
  • Throttle valve
  • Digital motor electronics upgraded to MSV80
Starting December 2008, a N52K received a new revised cylinder head that fixed the HVA ticking noise. Starting February 2009, N52T shipped with F10 chassis. It included a Solenoid valve for the variable oil pump and MSV90 DME. Starting June 2010, updated new pistons for N52b25 were released to fix excessive oil burning caused by unfavourable positioning of oil drain holes.

Download Revision summary

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