This ACDelco brake pad wear sensor is a direct fit for 2013-2016 BMW X3 rear disc brakes. The snap-on mounting style and mini-blade terminal type are easy to install with the included male connector. With one sensor included and two wires, this sensor is a reliable replacement for worn out brake sensors. The sensor type is a brake pad wear sensor and it is made of durable plastic material. The ACDelco 18K2302 sensor has OE/OEM part number 19305179 and interchange part number 19305719. It features wired connectivity and is not a universal fitment. This non-vintage performance part is manufactured in China and has no impact on vehicle performance.