Quick Overview PREMIUM GRADE: Raybestos R-Line Disc Brake Pad Electronic Wear Sensors are designed to keep you informed about the remaining life of your brake pads OE SPECIFICATIONS: Manufactured to meet or exceed OE specifications to ensure form, fit and function for safe, quiet and smooth brake system performance OFFERS HIGH RESISTANCE: Made from high-quality materials and engineered and tested to meet durability and reliability under extreme conditions EASY INSTALLATION: Meets factory specifications for easy installation with no modifications required VEHICLE FIT: BMW 328i xDrive 2011-2012, 335i xDrive 2011-2013, X1 2013-2015 Raybestos EWS142 R-Line Replacement Front Disc Brake Pad Electronic Wear Sensors are designed to keep you informed about the remaining life of your brake pads. Engineered and tested to meet durability and reliability under extreme conditions, this electronic wear sensor monitors the thickness of your vehicle’s pads and sends a signal when the pads have worn beyond their intended service life. Made to OE requirements for fit, form and function, you can be assured your new Raybestos wear sensors will perform equal to or better than the original wear sensors on your vehicle.