Replacement Part Number: Belt Tensioner Pulley Assembly Replacement 3911489614, 11287563927; 36364; Belt idler A replaces 36364, 50018, 89517, 11287556251, 231517, 580176, 89517FN, F565611; Serpentine drive belt replaces 7PK1855 K070730 7PK1856 11287628652; Belt Idler B replaces 36479, 50053, 89518, 11287557851
Smooth, Quiet Operation: The high-performance belt tensioner and idler pulleys help maintain proper belt tension, reducing vibration and minimizing engine noise for a quieter and more comfortable driving experience
Enhanced Belt Protection & Performance: By preventing slippage and maintaining proper alignment, this pulley and serpentine belt kit protects the drive belt and associated components, reducing premature wear and increasing overall engine efficiency
Built for Durability and Longevity: Crafted from premium materials, each component in this idler assembly kit is tested for heat resistance, load endurance, and extended service life—perfect for both daily driving and demanding conditions
Wide Vehicle Compatibility: Specifically engineered to fit for BMW models including 1 Series M 2011, 135i, 335i, 535i, 335is, and xDrive trims from 2007 to 2013 (Note: Please read the detailed description of the product for specific models and years)