BMW automotive engine families listed as N73. Specifications below retain the source's separate family and variant labels.
Family specifications
BMW N73 engine
| Field | Reported value |
|---|---|
| Production | 2003–2016 |
| Configuration | 60° V12 |
| Displacement | 6.0 L (5,972 cc) 6.7 L (6,749 cc) |
| Cylinder bore | 89 mm (3.50 in) 92 mm (3.62 in) |
| Piston stroke | 80 mm (3.15 in) 84.6 mm (3.33 in) |
| Valvetrain | DOHC w/ VVT & VVL |
| Fuel type | Petrol |
| Predecessor | BMW M73 |
| Successor | BMW N74 |
Variant specifications
Versions
| Version | Year | Displacement | Power | Torque | Comp. ratio |
|---|---|---|---|---|---|
| N73B60 | 2003-2008 | 5,972 cc (364.4 cu in) | 327 kW (445 PS; 439 hp) at 6,000 rpm | 600 N⋅m (443 lb⋅ft) at 3,950 rpm | 11.3:1 |
| N73B68 | 2003-2016 | 6,749 cc (411.8 cu in) | 338 kW (460 PS; 453 hp) at 5,350 rpm | 720 N⋅m (531 lb⋅ft) at 3,500 rpm | 11.0:1 |
Recorded vehicle applications
N73B60
- 2003-2008 E65/E66 760i/760Li
- 2017 Eadon Green Black Cuillin
N73B68
- 2003-2016 Rolls-Royce Phantom
BMW automotive engine directory
Design, development and variant notes
The naturally aspirated N73 V12 added petrol direct injection, twin-cam heads, double-VANOS and Valvetronic relative to the M73. Each cylinder head has its own variable-lift assembly.
N73B60 and N73B68 have different bore and stroke dimensions and were used in BMW 7 Series and Rolls-Royce applications respectively. The turbocharged N74 succeeded it.
Variant dimensions and compression
These values are associated with the named variant and source qualifier; equipment and market specifications can differ. A dash means the value is not listed here.
| Variant | Bore (mm) | Stroke (mm) | Compression ratio | Source qualifier |
|---|---|---|---|---|
| N73B60 | 89 | 80 | — | — |
| N73B68 | 92 | 84.6 | — | — |
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 N73. Wikipedia contributors; CC BY-SA 4.0. Source revision oldid 1297020379; 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 source gives N73 Valvetronic intake-valve lift from 0.30 to 9.85 mm and a 6,500 rpm redline for the described specification. Each cylinder bank has its own variable-lift assembly.