VAS211001 ? Clip Pliers Used to remove various interior component retaining clips. VAS6427 ? Release Pliers Used in conjunction with the VAS6551/7 to test SCR system pressure during diagnosis of the SCR system. VAS6617/13 ? Pressurized Gearbox Oil Filler Kit ? Adapter Used in conjunction with VAS6617 for filling various gearboxes found in Audi vehicles with oil. VAS6617/14 ? Pressurized Gearbox Oil Filler Kit ? Adapter Used in conjunction with VAS6617 for filling various gearboxes found in Audi vehicles with oil.