The Genuine BMW N55 Basic Walnut Blasting Kit is a tool kit designed specifically for use with BMW N55 engines. The kit includes all the necessary tools and materials for performing a walnut blasting procedure, which is used to clean carbon buildup from the intake valves and ports of the engine. This kit is an essential tool for maintaining the performance and longevity of N55 engines, and is recommended by BMW for regular maintenance. The kit comes with detailed instructions for proper use and is made with high-quality materials to ensure durability and effectiveness.