A ground connection for an aluminum component has grounding bolt which is fastened to the component, with an adapter over the surface, and which is composed of a material having greater strength than the aluminum component and differs from the aluminum component in electrochemical series and has a thread element which clamps the cable shoe of the ground conductor on a corresponding contact area of the grounding bolt. Permanently high functional reliability is obtained by the grounding bolt and the adapter being composed of materials matched to one another so as to prevent corrosion and connected to one another in a cohesive manner, and the adapter is zinc-plated on the component side and is fastened to the component over a large surface area by a welded/soldered connection which is established using aluminum as an additional material.