The Genuine Porsche Disc Brake Pad Shim - 99635208602 is a small metal plate that is placed between the brake pad and the brake caliper on a Porsche vehicle. It is designed to help reduce noise and vibrations during braking, and also to provide a better fit between the brake pad and caliper. This shim is specifically designed by Porsche for use on their 996 model vehicles, and is made with high-quality materials to ensure durability and performance. It is an essential component for maintaining the braking system of a Porsche vehicle and ensuring smooth and quiet operation.