This Aux Belt Tensioner from Febi is designed for V-ribbed belt systems. It features an outer diameter of 70 mm, a width of 32 mm, and operates automatically. The housing is made of aluminum, and the track roller is made of plastic. Its weight is 0.904 kg. This part is compatible with various BMW models, including the 1 Series (F20, F21), 2 Series (F22, F23, F87), 3 Series (F30, F31, F34, F35, F80), 4 Series (F32, F33, F36, F82, F83), 5 Series (F07, F10, F11, F18), 6 Series (F06, F12, F13), 7 Series (F01, F02), X3 (F25), X4 (F26), X5 (E70 LCI, F15), and X6 (E71, F16). Please use the vehicle identification tool to confirm fitment for your specific vehicle. Always ensure parts are installed by a competent individual and observe service information. Key specifications include: Quantity Included: 1 (Sold Individually), Weight: 0.904 kg, Width: 32 mm, Outer Diameter: 70 mm, OE Number: 11 28 8 604 266.