The upper or lower ball joints are the ball joints that are on the suspension arms. The spare parts of 4L present in this section allow the replacement of worn parts. We have classified these parts by categories which are the slices of years of production and corresponding to the different assemblies. In order to help you even more in choosing your spare parts for R4, we advise you to consult the following link, in particular if your Renault 4 is on a pivotal year: follow this link!