BMW N53
The BMW N53 is a naturally aspirated straight-6 petrol engine which was produced from 2006 to 2013. The N53 replaced the BMW N52 and was released in 2006 in the post-facelift E60 5 Series.
| BMW N53 engine | |
|---|---|
| Overview | |
| Production | 2006–2013 |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 2,497 cc (152 cu in) 2,996 cc (183 cu in) |
| Cylinder bore | 82 mm (3.2 in) 85 mm (3.3 in) |
| Piston stroke | 78.8 mm (3.10 in) 88 mm (3.5 in) |
| Cylinder block material | Magnesium-Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC, with VVT |
| Combustion | |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW N52 |
| Successor | BMW N54 |
BMW never sold the N53 engine in North American, Australian and Malaysian vehicles, due to the high sulphur content of the fuel available in these markets. Instead, these regions continued to use its predecessor, the N52 engine.
The N53 is the final naturally aspirated straight-six engine produced by BMW, ending a history of continuous production of this engine configuration since the BMW M30 in 1968. The N53 began to be phased out following the introduction of the BMW N20 turbocharged four-cylinder engine in 2011.
There is no BMW M version of the N53. The BMW N54 turbocharged straight-6 engine was produced alongside the N53.