BMW 11287636379 Ribbed V-Belt

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For the N52 engine, the accessory belt powers components like the alternator and A/C compressor. Follow these steps: Use aluminum fasteners on N52 engines and test them with a magnet before each use. Replace them every time they're loosened. Engine movement caused by a faulty left side engine mount can damage the belt, particularly from contact with the power steering pump pulley. If belt damage is observed, replace the affected parts and the left engine mount. To replace the belt, remove the front intake cowl and engine splash shield. Use a T60 Torx socket to release the belt tension. If replacing the belt tensioner, remove the locking tool, pry off the dust cap, and replace the tensioner. Always follow the previously marked rotation directions if reusing belts.