• Replace the old or broken tensioner pulley to avoid noise. • Achieve proper belt tension and ensure good performance. • The round torsion spring provides reliability and constant tension. • Remove the tension and take out the pin after placing the belt. • The tension force adjusts automatically to keep the drive system stable. • Made with solid metal for wear resistance. • Does not break or deform easily, ensuring a longer lifespan. • Allows slight dimension differences due to different manual measurements. • OE Number: 11287509476. • Compatibility: for Mini Cooper S Body Trim 1.6L L4 Gasoline 2002-2008. • Package content: 1 unit of drive belt tensioner pulley.