Restore your brakes with new OEM style brake rotors. We offer the highest quality OEM style brake rotors for your Mercedes. You should always replace rotors in pairs - why? Well, over the life of your brake rotor, the heating and cooling has tendency to "work harden" the metal. Replacing only one side can result in uneven and potentially dangerous braking. Please note: On 2003-2009 E Class Mercedes models, the rear rotors came with mixed production of solid rear brake rotors and vented rear brake rotors. Please verify which rotor you have before ordering for these models (211 Chassis). If rear rotor is solid type, order part 42-505. If rear rotor is ventilated, order 42-506.