Note: Different modifications are equipped with rear calipers with brake cylinders of three different diameters: on mod. 208D, 212D (series 901 and 902) — diameter 45 mm; 308D and 312D (903 series) - 52 mm; 412D (904 series) - 44 mm. On the latter, each brake cylinder is equipped with two pistons.
Information copied from the website: mercedesman
