Hack Engineering Aux Belt Tensioner Roller Bolt (M50/M52/M54/S50/S54)
£2.90
Hack Engineering Aux Belt Tensioner Roller Bolt.
This replaces BMW part number 07129905534, which BMW has updated to a torx head. This makes it difficult and awkward when replacing belts.
Our hex-headed bolt ensures an easy, slip-free belt change.