The W221 Mercedes 2011 S400 Rear Right & Left Side Brake Calipers Caliper Set OEM is a direct replacement for your vehicle. It is made in Germany and has a manufacturer warranty of 6 months. It is compatible with the S-Class CL-Class S CL Class Mercedes Benz MB OEM. The brake caliper type allows for rear left driver side and rear right passenger side interchangeability.