This is a brand new SEM500070 sensor for the Land Rover Discovery 3 & 4. It is designed for the front brake pads and is very easy to install. This sensor is made by allmakes4x4 and is of high quality. It is a perfect replacement for your old or faulty brake pressure sensor. This sensor is compatible with SEM500070 reference OE/OEM number. The sensor type is brake pressure sensor and it is suitable for Land Rover Discovery 3 & 4.