The Bowa Brake Pad Wear Sensor - A098174 is a product used in automotive maintenance. It is a sensor designed to detect the wear of brake pads in a vehicle. The sensor is placed on the brake pad and measures the thickness of the pad. When the pad reaches a certain level of wear, the sensor will send a signal to the vehicle's dashboard, indicating that the brake pads need to be replaced. This product is compatible with various makes and models of cars and is a crucial component in ensuring safe and efficient braking.