Crashbot71

Does any one know what the Stone Protection Foils 4B0809387B (#16 in the diagram below) used for. I recently checked the connection for the positive cable that leads to my starter that's under that passenger side behind the wheel and found that the plastic that holds the cables have been broken and needs replacing. Looking at the part numbers 4A0971839 cover (#14 in the diagram below), 4D0971828 connecting piece (#10 in the diagram below under the frame) and 4B0809387B for Stone Protection Foil. Any help would be appreciated before I purchase it, thanks.