Introducing the B-M-W N63B44 engine block, engineered for superior performance and reliability. Compatible with X5, X6, 740, 750, 650i models (2007-2017), this high-quality cast iron cylinder block is perfect for repairs or replacements. Lightweight yet robust, it’s precision-engineered to enhance your engine’s efficiency. All components are tested for functionality. Discover more and elevate your engine's performance today! Visit our website for details!