The Vaico DISA Valve - V201375 is a high-quality replacement valve for the DISA (Differential Intake System Adjuster) unit found in certain BMW vehicles. This valve helps regulate the intake air flow to improve engine performance and fuel efficiency. It is made from durable materials and designed to meet or exceed OEM specifications. This product is easy to install and is compatible with the original DISA unit. It is a reliable and cost-effective solution for maintaining the proper functioning of your BMW's engine.