The VK56DE is a 5.6-liter V8 engine produced by Nissan. It features a DOHC (Dual Overhead Camshaft) design and is known for its robust performance and reliability. This engine is commonly used in various Nissan and Infiniti vehicles, providing a balance of power and efficiency. This engine is equipped with advanced technologies such as variable valve timing, which enhances its performance across different RPM ranges. The VK56DE is often paired with automatic transmissions, making it suitable for both everyday driving and more demanding applications, such as in the Nissan Titan and Infiniti QX56.