Originally Posted by nhmercracer
Those were not what you wanted. You need W202 C32 calipers, which are designed to be mounted on the front of the spindle. The W203 calipers mount on the rear of the spindle, which may cause an issue with bleeder / caliper piston orientation.
Not quite right. You want the W203 C32 (V6 Kompressor car). You reverse the sides and they work fine. That is how this upgrade works and has worked for fine for everyone who has done it. The same caliper was also used on the earlier C55 as well as the C500 and CLK500. the only difference in the C/CLK500 caliper is that they say "Mercedes Benz" on them instead of "AMG", but otherwse they are the same. Some 2005 C350's and SLK350's also use this caliper. The 2005 C350 and SLK350 used both the 330 mm rotor and the 345 mm rotor. Either of these calipers will work as long as you use the correct rotor.