BMW automotive engine families listed as N43. Specifications below retain the source's separate family and variant labels.
Family specifications
BMW N43 engine
| Field | Reported value |
|---|---|
| Production | 2007-2011 |
| 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 |
| Fuel type | Petrol |
| Predecessor | BMW N46 / N45 |
| Successor | BMW N13 |
Variant specifications
Versions
| Version | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| N43B16 | 1,599 cc (97.6 cu in) | 90 kW (121 bhp) at 6,000 rpm | 160 N⋅m (118 lb⋅ft) at 4,250 rpm | 2008-2011 |
| N43B20 | 1,995 cc (121.7 cu in) | 90 kW (121 bhp) at 6,000 rpm | 185 N⋅m (136 lb⋅ft) at 3,000 rpm | 2007-2011 |
| N43B20 | 1,995 cc (121.7 cu in) | 105 kW (141 bhp) at 6,000 rpm | 190 N⋅m (140 lb⋅ft) at 4,500 rpm | 2007-2011 |
| N43B20 | 1,995 cc (121.7 cu in) | 125 kW (168 bhp) at 6,700 rpm | 210 N⋅m (155 lb⋅ft) at 4,250 rpm | 2007-2011 |
Recorded vehicle applications
N43B16
- 2007-2009 E87 116i
- 2008 E90 316i
N43B20
Applications: 90 kW (121 bhp) version
- 2007-2011 E81/E87 116i
- 2009-2011 E90/E91 316i
105 kW (141 bhp) version
- 2007-2011 E90/E91/E92/E93 318i
- 2008-2011 E81/E87/E88 118i
125 kW (168 bhp) version
- 2007-2011 E81/E82/E87/E88 120i
- 2007-2011 E90/E91/E92/E93 320i
- 2007-2009 E60/E61 520i
BMW automotive engine directory
Design, development and variant notes
The N43 added direct petrol injection relative to the N46. It was not used in some markets with high-sulphur petrol, where N45 or N46 engines continued.
The source reports timing-chain guide debris, injectors, ignition coils and the NOx sensor among service issues. N43B16 lacks Valvetronic; from 2009 a lower-output N43B20 replaced it in some 116i and 316i applications.
Data adapted from the cited Wikipedia revision by Wikipedia contributors under CC BY-SA 4.0. Production dates and fitments reflect that revision; verify the exact engine code, market and vehicle before applying a specification.
Sources
Curated reference notes. Applicability follows the cited sources; hardware testing by this wiki is not implied.
- Wikipedia: List of BMW engines. Wikipedia contributors; CC BY-SA 4.0. Source revision oldid 1382309748; accessed 2026-11-10.
- Wikipedia: BMW N43. Wikipedia contributors; CC BY-SA 4.0. Source revision oldid 1309557153; accessed 2026-11-10.
Further Wikipedia-sourced details
The following additional information is drawn from the cited Wikipedia revision by Wikipedia contributors, available under CC BY-SA 4.0. An open-ended date reflects the source snapshot, not confirmed current production or fitment.
Additional technical and variant notes
The article describes broken timing-chain guide material potentially blocking the oil strainer and causing oil starvation. It also reports injector, ignition-coil and NOx-sensor problems; the presence of any fault requires diagnosis on the vehicle.