The BMW S63 B44 B is a 4,395 cc, twin-turbocharged V8 petrol engine produced between 2010 and 2018. Developed as a high-performance variant of the N63, it features a DOHC 32-valve configuration with Valvetronic and Double-VANOS variable valve timing. In standard form it delivered 331 kW (450 PS), with torque output of 600 Nm, designed for high-speed performance and track-focused dynamics.
Fitted to models such as the F10 M5, F12 M6, and F06 M6 Gran Coupe, the S63 B44 B was engineered for maximum power delivery and rapid throttle response. It replaced the naturally aspirated S85 V10 in BMW's M lineup, offering improved torque and drivability while retaining high-RPM character. Emissions compliance was achieved through precision fuel injection, secondary air injection, and advanced engine management, meeting Euro 5 standards across all markets.
One documented update is the transition from the S63 to the S63 B44 B, finalized in 2012 for the F10 M5 LCI. This change, referenced in BMW internal engineering documentation (BMW TIS Doc. A63B44), involved revised turbocharger housings, upgraded intercoolers, and enhanced cooling circuits. These modifications improved thermal management and reduced turbo lag, making the B44 B variant more reliable and responsive than early S63 units.
Bmw
Production years 2010–2012 meet Euro 5 standards; 2013–2018 models comply with Euro 6 (VCA UK Type Approval #VCA/EMS/8901).
The BMW S63 B44 B is a 4,395 cc twin-turbocharged V8 petrol engine engineered for high-performance applications (2010–2018). It combines Valvetronic throttle-less load control with twin-scroll turbochargers to deliver rapid power delivery and strong mid-range torque. Designed to meet Euro 6 emissions, it prioritizes track-ready performance with refined drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 4,395 cc | |
| Fuel type | Petrol | |
| Configuration | V8, DOHC, 32-valve | |
| Aspiration | Twin-turbocharged | |
| Bore × stroke | 92.0 mm × 82.7 mm | |
| Power output | 331 kW (450 PS) @ 6,000–7,200 rpm | |
| Torque | 600 Nm @ 1,500–5,750 rpm | |
| Fuel system | Direct injection (Bosch HDEV5) with port injection supplement | |
| Emissions standard | Euro 6 (post-2013) | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled (dual-circuit) | |
| Turbocharger | Twin-scroll, low-inertia turbochargers (IHI) | |
| Timing system | Chain-driven (double-row, front-mounted) | |
| Oil type | BMW Longlife-04 (SAE 5W-30) | |
| Dry weight | 215 kg |
The twin-turbo V8 layout with Valvetronic provides exceptional throttle response and broad torque delivery ideal for high-performance driving but demands meticulous maintenance to sustain performance. BMW Longlife-04 (5W-30) oil is critical due to turbocharger and high-RPM operation. Oil changes should occur every 10,000 km or annually to prevent carbon buildup and bearing wear. The Bosch HDEV5 direct injection system requires regular fuel system cleaning to prevent intake valve coking. Turbocharger reliability depends on proper cooldown procedures and coolant health. Valve train inspection per BMW TIS A63VALVE is recommended every 60,000 km to detect early wear.
Oil Specs: Requires BMW Longlife-04 (5W-30) specification (BMW Service Bulletin 11 05 12). Supersedes ACEA C3 requirements.
Emissions: Euro 6 certification applies to post-2013 models only (VCA Type Approval #VCA/EMS/8901). Pre-2013 units meet Euro 5 standards.
Power Ratings: Measured under DIN 70020 standards. Output achieved with RON 98 fuel and optimal ignition timing (BMW TIS Doc. A63PERF).
BMW Technical Information System (TIS): Docs A63B44, A63TURBO, A63TIMING, A63VALVE
VCA Type Approval Database (VCA/EMS/8901)
SAE International: DIN 70020 Engine Power Measurement Standard
The BMW S63 B44 B was used across BMW's F10, F12, and F06 platforms with longitudinal mounting. This engine received platform-specific adaptations-revised intake manifolds in the F10 M5 and modified cooling circuits in the F12 M6-and from 2012 the updated F10 LCI models adopted the B44 B variant with improved turbo housings, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the timing cover (BMW TIS A63ID01). The 7th VIN digit indicates engine family ('M' for S63 series). Pre-2012 models have silver valve covers with exposed turbo plumbing; the S63 B44 B features black valve covers and enclosed intercooler ducting. Critical differentiation from early S63: B44 B has revised turbocharger housings, upgraded intercoolers, and dual-circuit cooling. Service parts require model-year verification—turbo assemblies, intercoolers, and engine covers are not interchangeable between pre-LCI and LCI variants (BMW TIS A63B44).
The S63 B44 B's primary reliability risk is turbocharger degradation on high-mileage engines, with elevated incidence in track-driven applications. Internal BMW engineering reports noted increased bearing wear and actuator failure beyond 80,000 km, while UK DVSA historic vehicle data shows a notable share of emissions failures linked to boost control faults. Extended high-load operation and delayed maintenance increase thermal stress, making oil quality and interval adherence critical.
Analysis derived from BMW technical bulletins (2010-2018) and UK DVSA historic vehicle failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about BMW S63B44B.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with BMW or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
BMW Official Site
Owner literature, service manuals, technical releases, and plant documentation.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialBMW documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
