For BMW N52 Engine Serpentine Drive Belt + Tensioner w/ Bolt + Idler Pulley Kit
Drive Belt Pulley Tensioner Kit with Bolt For BMW E90 E91 E92 E93 E60 E83 N52 Engine. Only Fit For BMW N52 Engine. As these cars get older and more miles are driven, the belt tensioner needs to be replaced along with the belt.