Brake Pad Wear Indicator Sensor Front WIR5155 Apec. Part Number WIR5155. APEC WIR5155. Brake Type Disc Brake. BRAKE FIT BWR5026. Fitting Position: Front Axle; Number of wear indicators: 2 Per Axle. PORSCHE CAYENNE (9PA) 3.6 SUV Petrol 02/2007 09/2010 AWD 24 290 213.