The Bowa Brake Pad Wear Sensor - A098173 is a component used in automotive braking systems to detect the wear of brake pads. It is a small electronic sensor that is attached to the brake pad and measures the thickness of the pad. When the pad wears down to a certain level, the sensor sends a signal to the vehicle's computer, which then triggers a warning light on the dashboard to alert the driver that the brake pads need to be replaced. This helps to ensure the safety of the vehicle and its occupants by preventing the brake pads from wearing down completely. The Bowa Brake Pad Wear Sensor - A098173 is a reliable and essential part of any vehicle's braking system.