The Genuine VW / Audi Drive Belt Idler Pulley Bolt - WHT001100 is a high-quality bolt designed specifically for use with Volkswagen and Audi vehicles. It is used to secure the drive belt idler pulley, which is an important component in the engine's belt system. The bolt is made from durable materials to ensure long-lasting performance and is an exact replacement for the original part. It is an essential component for maintaining the proper tension and alignment of the drive belt, which is crucial for the smooth operation of the engine. This bolt is a genuine OEM part, ensuring a perfect fit and compatibility with your vehicle.