Fan Aux Belt Tensioner Pulley V Ribbed Belt Idler Fits BMW Series 1, 3, 5, 7
A good pulley has a smooth surface and high quality bearings to reduce vibration and extend belt life. BMW Series 1 (E81) 116d, 118d, 120d, 123d 2007-2011. BMW Series 1 (E87) 116d, 118d, 120d, 123d 2004-2011.