{"product_id":"dayco-89842-accessory-drive-belt-idler-pulley","title":"Dayco 89842 Accessory Drive Belt Idler Pulley","description":"\u003ch2\u003eAccessory Drive Idler Pulley\u003c\/h2\u003e\u003cp\u003eDayco 89842 is an accessory drive belt idler pulley for select Audi and Volkswagen applications. It is listed for multiple V8 and quattro fitments, including Audi R8, Audi S5, and Audi A6 Quattro models, with coverage that spans several model years.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAccessory drive belt idler pulley for belt routing and tension management.\u003c\/li\u003e\n\u003cli\u003eFits select Audi and Volkswagen applications with idler pulley notes in the catalog data.\u003c\/li\u003e\n\u003cli\u003eDayco 89842 supports a broad range of premium European vehicle fitments.\u003c\/li\u003e\n\u003cli\u003eCatalog fitment includes Audi R8, Audi S4, Audi S6, Audi S8, Audi A8 Quattro, Audi Q7, Audi Allroad Quattro, Audi A6 Quattro, Audi S5, and Volkswagen Touareg.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eDayco 89842 is an accessory drive belt idler pulley used in the belt drive system to guide the serpentine belt along its path. This part number appears across multiple Audi and Volkswagen platforms, including 2004-2009 Audi S4, 2007-2011 Audi A6 Quattro, 2008-2012 Audi S5, and 2007-2009 Volkswagen Touareg applications. If you are replacing a worn idler pulley on an Audi A6 Quattro or Audi R8, this catalog listing provides a direct reference point for the correct belt system component.\u003c\/p\u003e\u003cp\u003eThis part cross-references Monroe Shocks \u0026amp; Struts (e.g., 172286, 182286) for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Is Used For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacing a noisy or rough idler pulley in the accessory drive system.\u003c\/li\u003e\n\u003cli\u003eRestoring proper belt tracking when the pulley surface is worn.\u003c\/li\u003e\n\u003cli\u003eAddressing belt squeal caused by pulley bearing wear.\u003c\/li\u003e\n\u003cli\u003eCorrecting belt routing issues related to a damaged pulley.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle year, make, model, and belt system configuration against the catalog fitment before ordering. Confirm the pulley location and compare the existing part number 89842 to the removed component for an accurate match. Professional installation is recommended for accessory drive belt service.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDayco supplies belt drive system components for automotive service applications, and this part is cataloged under Dayco 89842 for fitment verification.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":53519224602805,"sku":"BCWL-89842","price":51.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_89842_Fro.jpg?v=1791961672","url":"https:\/\/www.partcatalog.com\/products\/dayco-89842-accessory-drive-belt-idler-pulley","provider":"PartCatalog","version":"1.0","type":"link"}