{"product_id":"dayco-89551-accessory-drive-belt-idler-pulley-left-or-upper","title":"Dayco 89551 Accessory Drive Belt Idler Pulley - Left or Upper","description":"\u003ch2\u003eOverview of Dayco Accessory Drive Belt Idler Pulley 89551\u003c\/h2\u003e\u003cp\u003eThe Dayco accessory drive belt idler pulley 89551 is engineered for reliable performance in BMW vehicles. Designed with a polymer material and a single bearing, this pulley supports serpentine belt systems with up to 8 ribs, ensuring smooth belt operation and longevity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstructed from durable polymer material for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eCompatible with serpentine belt systems up to 8 ribs wide\u003c\/li\u003e\n\u003cli\u003eSingle bearing design for efficient rotation and reduced friction\u003c\/li\u003e\n\u003cli\u003eFlat pulley profile suitable for specific BMW accessory drive configurations\u003c\/li\u003e\n\u003cli\u003ePrecision fit for various BMW models including 335i, 435i, 535i, 640i, 740i, M2, M3, M4, X3, X4, X5, and X6\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dayco 89551 accessory drive belt idler pulley is crafted from high-quality polymer, providing a balance of strength and lightweight performance. Its flat design accommodates serpentine belts with a maximum width of 8 ribs, commonly found in BMW accessory drive systems. The single bearing incorporated in this pulley ensures smooth and consistent rotation, reducing wear on the belt and other drive components. This part is specifically designed to meet the fitment requirements of a wide range of BMW models, including the 335i, 435i, 535i, 640i, 740i series, as well as performance models like the M2, M3, and M4, and SUVs such as the X3, X4, X5, and X6.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplaces worn or damaged idler pulleys causing belt misalignment\u003c\/li\u003e\n\u003cli\u003eEliminates belt squeal or slipping due to pulley bearing failure\u003c\/li\u003e\n\u003cli\u003eRestores proper tension and routing in serpentine belt systems\u003c\/li\u003e\n\u003cli\u003ePrevents premature belt wear from rough or uneven pulley surfaces\u003c\/li\u003e\n\u003cli\u003eSupports accessory drive components like alternators, power steering, and air conditioning compressors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dayco 89551 idler pulley, ensure the serpentine belt is properly routed according to the vehicle’s service manual. Inspect the belt for wear and replace if necessary to maintain optimal system performance. Use appropriate tools to avoid damaging the polymer surface or bearing during installation. Verify pulley alignment and tension after installation to prevent belt noise and premature wear.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDayco manufactures the 89551 accessory drive belt idler pulley to meet OEM specifications for fit and function. The polymer construction and bearing quality are tested to provide consistent performance under normal operating conditions. While specific warranty details are not provided, Dayco products typically come with a limited warranty against defects in materials and workmanship.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":52149213069493,"sku":"BCWL-89551","price":51.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_89551_Fro.jpg?v=1775588034","url":"https:\/\/www.partcatalog.com\/products\/dayco-89551-accessory-drive-belt-idler-pulley-left-or-upper","provider":"PartCatalog","version":"1.0","type":"link"}