Brake Pad Wear Indicator Sensor Front 280176 NK. Part Number 280176. PORSCHE 7PP907637, 95561236560, 97060914300, 971907637. Fitting Position: Front Axle; Brake Type: Disc Brake; Construction Year to: 12/2009; Braking System: for vehicles without ceramic brakes; or; Fitting Position: Front Axle; Brake Type: Disc Brake; Braking System: for vehicles with ceramic brakes.