Power Brake Booster Plunger Seal Kit for Mercedes C209 W203 W204 W212 W163 X204 This Listing Includes: One x 001-430-07-08 S - URO - Power Brake Booster Plunger Seal Kit Note: Repair solution for a leaking input shaft vacuum seal. Typically characterized by a loud whistling noise and loss of braking power. Contains:1 Durable EPDM Vacuum Seal 1 Plunger Seal. Fits For .