BMW X5M / X6M Engine – S63B44B High-Performance V8

Upgrade or replace your BMW X5M or X6M engine with this genuine S63B44B power unit, designed for high performance, reliability, and longevity. This factory BMW V8 engine is ideal for owners seeking an OEM replacement, a performance upgrade, or a restoration solution for their X5M (F85) or X6M (F86).

The S63B44B is BMW’s twin-turbocharged V8, engineered to deliver massive power, smooth torque, and modern M performance dynamics. Known for its advanced engineering, durability, and precision, this engine maintains BMW’s legendary reputation for luxury SUVs with track-capable performance.

Engine Specifications

• Engine Code: S63B44B

• Configuration: 4.4L V8, twin-turbocharged

• Displacement: 4,395 cc (4.4 liters)

• Power Output: ~575 hp (varies by model, X5M/X6M standard output)

• Torque: ~750 Nm (standard)

• Condition: Genuine OEM BMW engine – excellent, low mileage / fully tested

• Applications: BMW X5M (F85), BMW X6M (F86)

• Features:

  • Twin-scroll turbochargers for maximum efficiency and power delivery

  • High-strength forged pistons and reinforced connecting rods

  • Aluminum cylinder heads with advanced cooling channels

  • Integrated engine management system for precise performance

  • Factory oil pump, timing chain, and ancillary equipment

  • Direct-fit replacement with OEM ECU and electronics

Key Benefits

• OEM Quality & Reliability – Engineered by BMW to OEM standards for X5M and X6M platforms.

• High-Performance Power – Twin-turbo V8 delivers exhilarating acceleration and smooth torque.

• Plug & Play Installation – Fits seamlessly with stock ECU, electronics, and drivetrain components.

• Long-Lasting Durability – Built with forged internals and high-grade materials to withstand high-performance use.

• Resale & Value Preservation – Maintains authenticity and factory-spec performance.

Why Choose the BMW S63B44B Engine?

The BMW S63B44B represents the pinnacle of BMW M engineering for luxury SUVs. With twin-turbo technology, robust internals, and advanced electronics, it ensures your X5M or X6M performs like a track-capable sports machine while maintaining everyday drivability.

This engine is perfect for:

• Replacing a worn, damaged, or high-mileage X5M/X6M engine

• Restoring a BMW to factory-spec performance

• High-performance upgrades with OEM reliability

• Track or spirited road driving with maximum confidence

Compatibility

• BMW X5M (F85, 2015–2023)

• BMW X6M (F86, 2015–2023)

⚠️ Note: Always verify ECU, transmission, and electronic compatibility before installation.

Ideal For

•  Owners replacing worn or damaged S63B44B engines

•  BMW enthusiasts restoring X5M or X6M to factory performance

•  Track-day drivers seeking high-performance reliability

•  Collectors wanting an OEM, low-mileage BMW V8 engine

The BMW S63B44B engine for X5M and X6M is a turnkey solution for performance, reliability, and authenticity. Its twin-turbo V8 design, forged internals, and OEM electronics provide the ultimate combination of power, safety, and longevity.