BMW N43 engine | |
---|---|
Overview | |
Production | 2007-2011 |
Layout | |
Configuration | Inline-4 |
Displacement | 1.6 L (1,599 cc) 2.0 L (1,995 cc) |
Cylinder bore | 82 mm (3.23 in) 84 mm (3.31 in) |
Piston stroke | 75.7 mm (2.98 in) 90 mm (3.54 in) |
Cylinder block material | Aluminium |
Cylinder head material | Aluminium |
Valvetrain | DOHC, with VVT |
Combustion | |
Fuel type | Petrol |
Chronology | |
Predecessor | BMW N46/N45 |
Successor | BMW N13 |
The BMW N43 is a naturally aspirated four-cylinder petrol engine which was sold from 2006 to 2013. It replaced both the BMW N46 and BMW N45 engines.[1] However the N43 was not sold in countries with high sulfur fuel,[2] therefore the N45/N46 engines remained in production alongside the N43.
Compared with its N46 predecessor, the N43 features direct injection.[3]
In 2011, as part of BMW's shift to turbocharging, the N43 was replaced by the BMW N13 turbocharged four-cylinder engine. The N43 suffered various problems in service - breakage of the cam chain plastic guides leading to oil starvation as the debris blocked the oil strainer, and problems with the injectors, coil packs and the NOx sensor.
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