The BMW N43 is a
naturally aspirated four-cylinder petrol engine which was sold from 2006-2013. It replaced both the
BMW N46
The BMW N46 is a naturally aspirated inline-four piston engines which replaced the BMW N42 and was produced from 2004 to 2015.
The N46 serves as the basis for the smaller BMW N45 engine (which does not have Valvetronic).
In 2007, the N46's suc ...
and
BMW N45 engines. However the N43 was not sold in countries with high sulfur fuel,
therefore the N45/N46 engines remained in production alongside the N43.
Compared with its N46 predecessor, the N43 features
direct injection.
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.
Versions
N43B16
The N43B16 has a displacement of and produces and .
It is the successor to the
BMW N45 engine and, as per the N45, does not have Valvetronic.
Applications:
* 2007-2009
E87 116i
* 2008
E90 316i
N43B20
The N43B20 has a displacement of and produces up to and .
In 2009, the N43B20 replaced the N43B16 in the 116i. Power remained at , however torque was increased.
Applications:mariefren
version
* 2007-2011
E81/E87 116i
version
* 2007-2011
E90/E91/E92/E93 318i
* 2008-2011
E81/E87/E88 118i
version
* 2007-2011
E81/E82/E87/E88 120i
* 2007-2011
E90/E91/E92/E93 320i
* 2007-2009
E60/E61 520i
See also
*
BMW
*
List of BMW engines
BMW has been producing engines for automobiles, motorcycles and aircraft since 1917, when the company began production of an inline-six aircraft engine. They have been producing automobile engines since 1933.
Motorcycle engines
Automotive ...
References
{{DEFAULTSORT:Bmw N43
N43
Straight-four engines
Gasoline engines by model