BMW N63B44A 4.4 V8 Bi-Turbo Engine – 408 HP/486 HP

Complete BMW N63B44A engine with a 4.4-liter V8 Bi-Turbo, designed to deliver high performance in the Bavarian brand's mid- to upper-range models. Introduced in 2008, this powertrain was installed in a wide range of vehicles, from the BMW X6 xDrive50i to the more powerful ActiveHybrid version.

Its configuration of 8 cylinders in a V, with 32 valves and a direct injection system, delivers between 408 and 486 hp, with torque reaching up to 700 Nm. An engine designed for those seeking responsiveness, torque, and reliability, characteristic of BMW's sporty range.

Technical Specifications:

• Displacement: 4.4 liters (4395 cm³)

• Cylinders: 8 in a V

• Valves per cylinder: 4 (DOHC)

• Induction: Bi-Turbo

• Fuel system: Direct injection

• Compatible transmission: Automatic transmission

• Power: 408 to 486 hp (300–357 kW)

• Torque: 600 to 700 Nm

• Fuel: Super Plus

• Emissions standards: Euro 4 III and Euro 5

Vehicle compatibility:
Installed in various BMW models between 2008 and 2014, including:
✅ BMW X6 xDrive50i
✅ BMW X6 ActiveHybrid
✅ BMW 5 Series, 6 Series, 7 Series (in some top-of-the-range versions)
✅ Coupé, Convertible, Wagon, Hatchback, SUV

Availability:
🔧 Engine available in a selected used version, tested and ready for shipping or installation.
📦 Shipping throughout Italy. Pickup at our location is available.

💬 Contact us for a personalized quote, compatibility verification for your vehicle, and warranty options.