Model variant:
N74B60U0, N74B66U0, N74B66U1, N74B68U0, N74B68U1
Production years covered:
2008-2022
Engine type:
V12 twin-turbocharged gasoline engine
Displacement:
6.0 L (5972 cc)
Configuration:
60-degree V12
Manual type:
Engine service manual (PDF download)
Market position:
Flagship luxury and high-performance vehicles
Target audience:
Technicians, mechanics, and DIY owners
Competitive advantage:
Exceptional smoothness, torque, and refinement
Key features:
Twin-turbocharging, direct injection, DOHC, four valves per cylinder, roller cam followers, forged steel components, timing chain drive
Engine mechanical:
Cylinder block, cylinder heads, pistons, connecting rods, crankshaft, bearings, camshafts, valvetrain
Lubrication system:
Oil pump, oil filter housing, oil cooler, lines
Cooling system:
Water pump, thermostat, radiator, hoses
Fuel system:
Direct injection, high-pressure fuel pump, injectors, fuel lines
Air intake system:
Air filters, intake manifold, throttle bodies
Turbocharging system:
Twin turbochargers, wastegates, intercoolers, charge pipes
Exhaust system:
Exhaust manifolds, catalytic converters, mufflers
Engine management:
DME, sensors, actuators, wiring diagrams
Ignition system:
Spark plugs, ignition coils
Emission control:
Crankcase ventilation, evaporative emission
Engine removal and installation:
Step-by-step procedures
Timing chain service:
Timing chain, tensioner, guides
Cylinder head service:
Valve adjustment, valve stem seals, head gasket replacement
Bottom end service:
Piston and rod removal, crankshaft inspection, bearing replacement
Turbocharger service:
Removal, installation, diagnosis
Torque specifications:
Complete fastener torque tables
Clearances and limits:
Wear limits and inspection criteria
Diagnostic trouble codes:
OBD-II codes and troubleshooting
Wiring diagrams:
Engine management and sensor circuits
Special tools:
Required tools and equipment
Parts information:
Genuine BMW part numbers and component identification
Technical depth:
Detailed for professional technicians and advanced DIY
Procedures included:
Inspection, maintenance, repair, overhaul
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Displacement:
6.0 L (5972 cc)
Compression ratio:
10.0:1
Maximum power:
544 hp (400 kW) at 5250 rpm
Maximum torque:
750 Nm at 1500-5000 rpm
Fuel system:
Direct injection (High Precision Injection)
Turbocharging:
Twin-turbocharged, two parallel turbochargers
Valvetrain:
DOHC, 4 valves per cylinder, roller cam followers
Engine block material:
Aluminum alloy
Cylinder head material:
Aluminum alloy
Timing drive:
Timing chain
Firing order:
1-7-5-11-3-9-6-12-2-8-4-10
Oil capacity:
8.5 liters (approx.)
Oil specification:
BMW Longlife-01
Oil change interval:
Every 12,000 miles or 12 months (BMW Condition Based Service)
Oil specification:
BMW Longlife-01
Oil capacity:
8.5 liters (approx.)
Coolant specification:
BMW blue coolant (phosphate-free, nitrite-free)
Spark plug interval:
Every 60,000 miles (approx.)
Air filter interval:
Every 30,000 miles (approx.)
Timing chain:
Inspect for wear; replace if noisy or stretched
Turbocharger:
Inspect for oil leaks, wastegate function, and bearing play
Common issues:
Oil leaks from valve cover gaskets, turbocharger wastegate rattle, high-pressure fuel pump failure, ignition coil failure, coolant leaks
