F48 Tensioner

F48 Tensioner

FOR BMW, BMW X1 F48 2016-20

For your BMW 3 Series, the belt tensioner is a crucial component that ensures the serpentine belt is properly tensioned. Here’s a description of the belt tensioner:

Functionality
1. Belt Tensioning: The belt tensioner is responsible for maintaining the correct tension on the serpentine belt, which drives various engine accessories such as the alternator, power steering pump, and air conditioning compressor.
2. Automatic Tensioning: The belt tensioner automatically adjusts the belt tension as the belt wears out, ensuring optimal performance and preventing belt slippage.