4.4L S63 S63B44 Engine Assembly for BMW M5 M6 X5 M X6 M

Elite Technical Specifications and M-Series Applications

TheFuchuan BMW S63 Engine Assembly is a DOHC 32-valve masterpiece that utilizes TwinPower Turbo technology to deliver supercar-killing performance. Unlike its civilian counterpart (the N63), the S63 features upgraded cooling, specialized oil systems for high lateral G-forces, and advanced pulse-tuned manifolds. Key technical data include:

• Displacement: 4,395 cc (4.4L)

• Bore x Stroke: 89.0 mm × 88.3 mm

• Compression Ratio:10.0:1

• Power Output: Approx. 412–460 kW (553–617 hp) @ 6000 rpm

• Torque: 680–750 Nm @ 1500–5750 rpm

This assembly is the definitive engine for the BMW M5 (F10/F90),M6 (F06/F12/F13),X5M (E70/F85/F95), and X6M (E71/F86/F96). By supplying the Fuchuan BMW S63 Engine Assembly, your business services the most exclusive and profitable segment of the performance aftermarket.

Motorsport-Grade Engineering and"Hot-V"Innovation

A defining characteristic of the Fuchuan BMW S63 Engine Assembly is its unique exhaust manifold design, where pipes from both banks feed the twin-scroll turbochargers to ensure constant exhaust pulses. Our manufacturing process emphasizes the high-grade Alusil block and the use of a lightweight forged steel crankshaft and reinforced connecting rods. The Fuchuan BMW S63 Engine Assembly also incorporates Double-VANOS and Valvetronic systems specifically tuned for high-RPM stability. These material choices ensure that the Fuchuan BMW S63 Engine Assembly can withstand the intense thermal and mechanical stresses found in high-speed track use while maintaining civil urban drivability.

Stringent Quality Validation and High-Load Testing

To safeguard the reputation of our international B2B partners, every Fuchuan BMW S63 Engine Assembly undergoes a rigorous multi-stage quality validation sequence. Given the extreme power density of this V8, each unit is subjected to an exhaustive hot-run test. During this verification, our engineers monitor high-pressure fuel rail performance, turbo boost synchronization, and oil lubrication efficiency at peak operational temperatures. We also perform a 100% electronic diagnostic scan to verify that all M-specific sensors meet factory tolerances. This commitment to quality ensures that each Fuchuan BMW S63 Engine Assembly arrives at your warehouse in peak mechanical condition, backed by our professional 12-month warranty.

Scalable B2B Logistics and Global Wholesale Support

Guangzhou Fuchuan is more than just a manufacturer; we are a strategic partner for the high-performance engine trade. We maintain a dedicated inventory of the Fuchuan BMW S63 Engine Assembly to facilitate the rapid fulfillment of bulk or specialized orders. Due to the significant value and weight of this V12 unit, each Fuchuan BMW S63 Engine Assembly is treated with industrial-grade anti-oxidation spray and secured in extra-reinforced, export-standard plywood crates to prevent transit damage. With our 24/7 technical support and expert documentation services, we make the process of importing the Fuchuan BMW S63 Engine Assembly seamless and highly profitable for prestige-focused wholesalers worldwide.