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| BMW M54 engine | |
|---|---|
 M54B25 in a E39 525i | |
| Overview | |
| Production | 2000–2006 |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 2,171 cc (132 cu in) 2,494 cc (152 cu in) 2,979 cc (182 cu in) |
| Cylinder bore | 80 mm (3.1 in) 84 mm (3.3 in) |
| Piston stroke | 72 mm (2.8 in) 75 mm (3.0 in) 89.6 mm (3.53 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC w/ VVT |
| Combustion | |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW M52 |
| Successor | BMW N52 |
The BMW M54 is a naturally aspirated straight-6 DOHC petrol engine produced from 2000 to 2006. It was released in the E53 X5[1] and is the replacement for the M52 engine. The S54 is the equivalent high performance engine, used in the E46 M3, the Z3 M Coupé/Roadster and the E85/E86 Z4 M. The BMW M56 SULEV engine (sold in several states of the United States) is based on the M54.
The M54 was phased out following the introduction of the BMW N52 engine in 2004. From 2001 to 2003, the M54 was included on the Ward's 10 Best Engines list.