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BMW N74 engines

Revision 2

by llandowtuninguk@gmail.com
Expand Wikipedia engine design, control, variants and application details

This is a historical revision. Read the current page or return to its history.

Page organisation in this revision
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Technical article
Subject
Engines
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Section level
Applies to
No ECU-specific applicability
Tool groups
Not recorded in this older revision
Manufacturers
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BMW automotive engine families listed as N74. Specifications below retain the source's separate family and variant labels.

Family specifications

BMW N74 engine

FieldReported value
Production2009–present
Configuration60° V12
Displacement6.0 L (5,972 cc) (2009–2015) 6.6 L (6,592 cc) (2009–2022) 6.7 L (6,749 cc)
Cylinder bore89 mm (3.50 in)
Piston stroke80 mm (3.15 in) 88.3 mm (3.48 in) 90.4 mm (3.56 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC with VVT
TurbochargerTwin-turbo
Fuel typePetrol
Power output400–465 kW (536–624 hp)
Torque output750–900 N⋅m (553–664 lb⋅ft)
PredecessorBMW N73

Variant specifications

Versions

EngineDisplacementPowerTorqueYear
N74B605,972 cc (364.4 cu in)400 kW (536 hp) at 5,250 rpm750 N⋅m (553 lb⋅ft) at 1,500–5,000 rpm2008–2015
N74B666,592 cc (402.3 cu in)420 kW (563 hp) at 5,250 rpm780 N⋅m (575 lb⋅ft) at 1,500–5,000 rpm2009–2020
N74B666,592 cc (402.3 cu in)465 kW (624 hp) at 5,600 rpm800 N⋅m (590 lb⋅ft) at 1,500–5,500 rpm2013–2022
N74B666,592 cc (402.3 cu in)442 kW (593 hp) at 5,250 rpm840 N⋅m (620 lb⋅ft) at 1,500 rpm2016–2020
N74B66TU6,592 cc (402.3 cu in)449 kW (602 hp) at 5,500 rpm800 N⋅m (590 lb⋅ft) at 1,500 rpm2016–2019
N74B66TU6,592 cc (402.3 cu in)447.5 kW (600 hp) at 5,500 rpm850 N⋅m (627 lb⋅ft) at 1,550 rpm2020–2022
N74B686,750 cc (411.9 cu in)420 kW (563 hp) at 5,250 rpm900 N⋅m (664 lb⋅ft) at 1,500 rpm2017–present

Versions — N74B66

YearApplicationPower outputTorque
2010–2020Rolls-Royce Ghost420 kW (563 hp)780 N⋅m (575 lb⋅ft)
2014–2020Rolls-Royce Ghost V-Specification442 kW (593 hp)780 N⋅m (575 lb⋅ft)
2019Eadon Green Panthean Coupe442 kW (593 hp)840 N⋅m (619.5 lb⋅ft)
2014–2023Rolls-Royce Wraith465 kW (624 hp)800 N⋅m (590 lb⋅ft)
2015–2023Rolls-Royce Dawn420 kW (563 hp)820 N⋅m (605 lb⋅ft)

Recorded vehicle applications

N74B60

  • 2009–2015 BMW F01/F02/F03 760i/760Li

N74B66TU

  • 2016–2022 G12 M760Li xDrive

N74B68

  • 2017–present Rolls-Royce Phantom VIII
  • 2018–present Rolls-Royce Cullinan
  • 2021–present Rolls-Royce Ghost

BMW automotive engine directory

Design, development and variant notes

The N74 is a twin-turbo V12 with direct injection and double-VANOS. Unlike the naturally aspirated N73, it omits Valvetronic; its turbochargers are outside the cylinder banks.

The B60, B66 and B68 versions have different displacement and applications. Later B66 technical-update versions and regional emissions equipment have different quoted outputs.

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.