The Genuine Porsche Disc Brake Pad Shim - 99635108901 is a small metal plate designed to fit between the brake pad and the brake caliper on a Porsche vehicle. It helps to reduce noise and vibration during braking, and also serves to protect the brake pad from excessive wear and tear. This product is an original equipment manufacturer (OEM) part made specifically for Porsche vehicles, ensuring the highest quality and compatibility. It is an essential component in maintaining the performance and safety of the vehicle's braking system.