Bosch wires are generally not considered to be the quality of some of the others such as Beru, Most shops won't even install then on MB at all. Having said that, I just went online with my distributor and saw that the 3 brands they offer( Bosch included) all are available for about 180.00. I run a shop and generally prefer other brands also. Bosch names don't insure quality, for ex, Bosch oil filters are at the bottom of the heap. Bilstein shouldn't be allowed to put there name on steering linkage parts either FWIW, good shocks,awful steering linkage parts