Discover the V4.0 Airbox from Mk Design Perf., featuring a revised intake box with a larger capacity for enhanced performance. Experience improved throttle response, ensuring your vehicle runs smoother and faster. This advanced V4.0 model is also fully backwards compatible with V3.X, allowing for seamless upgrades. Enjoy improved fitment for easy installation, making this airbox a must-have for any auto enthusiast. Upgrade your vehicle's performance with Mk Design Perf.'s cutting-edge solutions.