How To Replace The Serpentine Belt, Tensioner, & Idler Pulley On A BMW N52 Engine
The serpentine belt on the front of the BMW N52 engine is responsible for driving the power steering pump, alternator, and A/C compressor. If either the belt or the tensioner fails, you'll lose your power steering, and the battery won't be receiving a charge. It's recommended that the belt be...
