Turbo Groove automotive brake discs have a widened, arcuate slit that increases the flow of cool air, lowering the temperature of the brake pads and disc, while draining dust, dirt and hot gases better than a straight line, which can rust and become ineffective. Drilled holes remove surface gases when braking from high speed, while not weakening the structure of the disc as in through drilling. TECHNICAL DATA Type: Drilled and Slotted Full / Ventilated: Full Number of holes: 5 Diameter (mm): 331 Height (mm): 56 Thickness (mm): 13 Minimum thickness (mm): 11 Axle application: Back APPLICATION Brand Model Engine Value Power (KM) Year MERCEDES-BENZ M-CLASS (W163) ML230 2.3 2000-2005 MERCEDES-BENZ M-CLASS (W163) ML270 2.7TD 2002-2005 MERCEDES-BENZ M-CLASS (W163) ML320 3.2 2000-2004 MERCEDES -BENZ M-CLASS (W163) ML350 3.7 2002-2005 MERCEDES-BENZ M-CLASS (W163) ML400 4.0TD 2001-2005 MERCEDES-BENZ M-CLASS (W163) ML430 4.3 2000-2005 MERCEDES-BENZ M-CLASS (W163 ) ML500 5.0 2001-2005 MERCEDES-BENZ M-CLASS (W163) ML55 AMG 5.4 99-2005