Abstract: The invention pertains to an add-on part for a vehicle formed as a cast part 1, which is connectable to a vehicle body of the vehicle and for this purpose has a connection part 2 accommodated in cavity 3, in which the joining element or connection part 2 is cast into the cast part during production of the cast part 1.

Abstract: The invention pertains to a body part 1 for a vehicle formed at least partly from steel cast parts or light metal cast parts 2, at least one metal part or metal material 3 being introduced to the interior of the body or body part 1 so that the body part 1 after conclusion of the casting process has a closed surface structure, the steel cast parts or light metal cast parts 2 being introduced to the casting mold as reinforcement elements that enter into a fixed bond with the solidified melt on conclusion of the casting process.

Abstract: The invention relates to a support element for a vehicle body, in particular for supporting columns, the support element being produced from cast iron. The support element is designed, for example, as a lattice structure and is filled with metallic hollow balls for additional reinforcement.