The EBC brake wear lead sensor kit for 2009–2011 Audi A4 2.0 Turbo is a front wear lead intended to help protect rotors from metal-to-metal contact that can cause severe damage. Supplied for direct fitment to the front braking system and specified around FMSI pad D1322 dimensions, it serves as a preventative component to alert when pad wear approaches rotor contact.
EBC 09-11 Audi A4 2.0 Turbo Front Wear Leads