BMW N43

BMW N43 engine
Overview
Manufacturer	BMW
Production	2007-2011
Combustion chamber
Configuration	straight-4 DOHC
Chronology
Predecessor	BMW N46/N45
Successor	BMW N13

The BMW N43 is a straight-4 naturally aspirated DOHC engine which was sold from 2007-2011. It replaced the N46 (and related N45), 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 turbocharged N13.

The N43B16 has a 1,599 cc (98 cu in) displacement and produces 90 kW (121 hp) and 160 N·m (118 lb·ft). It is the successor to the N45 engine and, as per the N45, does not have valvetronic.

Applications:

The N43B20 has a 1995 cc displacement and produces up to 127 kW (173 PS; 170 hp) and 210 Nm.

In 2009, the 2.0 litre N43B20 replaced the 1.6 litre N43B16 in the 116i. Power remained at 90 kW (121 hp), however torque was increased. It is suggested that this 90 kW version might not have valvetronic.

Applications:

90 kW (121 hp) and 185 N·m (136 lb·ft) version

110 kW (148 hp) and 190 N·m (140 lb·ft) version

127 kW (170 hp) and 210 N·m (155 lb·ft) version

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