The BMW M52 is an I6 piston engine. Displacement ranges from 2500cc to 2800cc. It is a DOHC 16-valve engine with VANOS Variable Valve Timing. It replaced the BMW M50 engine in 1994 and was replaced in 2001 with the BMW M54 engine. The engine used Nikasil cylinders rather than cast iron cylinder liners in markets with low-sulfur fuel. The M52 includes VANOS variable valve timing on the intake.
A Technical Update or M52TU version in 1999 added Double VANOS and other modifications.
The M52 was on the Ward's 10 Best Engines list for 1995 through 1998.
M52B20
A 2.0 L version introduced in 1994. Bore is 80 mm and stroke is 66 mm.
Applications:
M52B22
2.2 L
Applications:
M52B24
2.4 L. For Thai market only.
Applications:
M52B25
A 2.5 L (2494cc) version introduced in 1995. It produces 125 kW (170 hp). Bore is 84 mm and stroke is 75 mm. The M52B25 won the 2-2.5 L category of the International Engine of the Year awards for 2003 and 2004.
Applications:
M52B28
A 2.8 L (2793 cc) version also debuted in 1994. It has square 84 mm bore and stroke and produces 193 hp (142 kW).
Applications:
M52B30
The 3.0 L (2979cc) version produces 225 hp and 214 ft.lbf. Bore stays at 3.31 in, but stroke is longer at 3.53 in.
Applications:
S52B30
The S52 is the M3 version of the M52.
Applications:
See also
