{"product_id":"hayden-5989-accessory-drive-belt-idler-pulley","title":"Hayden 5989 Accessory Drive Belt Idler Pulley","description":"\u003ch2\u003eOverview of Hayden Pulley Accessory Drive Belt Idler Pulley\u003c\/h2\u003e\u003cp\u003eThe Hayden Pulley 5989 is a durable accessory drive belt idler pulley designed for select Mercedes-Benz models. Engineered to meet or exceed OEM specifications, this black plastic pulley ensures reliable serpentine belt tension and smooth operation in your vehicle's accessory drive system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaterial: High-quality black plastic construction\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 3.1875 inches (80.963 mm)\u003c\/li\u003e\n\u003cli\u003eInside Diameter (Bore): 0.375 inches (9.525 mm)\u003c\/li\u003e\n\u003cli\u003eWidth: 1 inch (25.4 mm)\u003c\/li\u003e\n\u003cli\u003eBelt Type Compatibility: Serpentine belts with 1 inch (25.4 mm) width\u003c\/li\u003e\n\u003cli\u003eGroove Quantity: Smooth surface for optimal belt contact\u003c\/li\u003e\n\u003cli\u003eMount Hole Quantity: Single mounting hole (hardware not included)\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM standards for fit and function\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis Hayden Pulley 5989 idler pulley is specifically designed as a back idler for accessory drive belt systems. Its smooth groove surface and precise dimensions support serpentine belts, maintaining proper tension and alignment. The plastic material offers a balance of strength and lightweight performance, suitable for the demands of Mercedes-Benz vehicles such as the 190E, 300D, 300SDL, 300TD, 350SD, 350SDL, E300, and SL500.\u003c\/p\u003e\u003cp\u003eThe pulley’s 0.375 inch inside diameter and 3.1875 inch outside diameter ensure compatibility with the specified belt widths and mounting configurations. This part is engineered to provide consistent belt routing and tension, reducing wear on belts and other drive components.\u003c\/p\u003e\u003ch2\u003eAbout the Hayden Pulley Product Line\u003c\/h2\u003e\u003cp\u003eThe Hayden Pulley line focuses on accessory drive belt system components, offering reliable idler and tensioner pulleys designed to meet OEM requirements. The Pulley product line emphasizes precise fitment and durable materials, making it a suitable replacement option for maintaining proper belt tension and accessory drive performance in various vehicle applications.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or damaged idler pulleys in Mercedes-Benz 190E and 300 series models\u003c\/li\u003e\n\u003cli\u003eResolves belt slippage or misalignment caused by pulley wear\u003c\/li\u003e\n\u003cli\u003eEliminates noise or squealing from failing accessory drive components\u003c\/li\u003e\n\u003cli\u003ePrevents premature serpentine belt wear due to improper tension\u003c\/li\u003e\n\u003cli\u003eSupports smooth operation of engine accessories such as alternator and power steering pump\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify compatibility with your specific Mercedes-Benz model before installation\u003c\/li\u003e\n\u003cli\u003eEnsure the mounting hole aligns correctly; mounting hardware is not included and must be sourced separately\u003c\/li\u003e\n\u003cli\u003eInspect serpentine belt condition and replace if necessary during pulley installation\u003c\/li\u003e\n\u003cli\u003eUse proper torque specifications to avoid damage to the pulley or mounting bracket\u003c\/li\u003e\n\u003cli\u003eCheck belt routing diagrams to confirm correct installation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Hayden Pulley 5989 meets or exceeds OEM standards for fit, form, and function, ensuring reliable performance in your Mercedes-Benz vehicle. While specific warranty details are not provided, Hayden products typically adhere to industry quality controls to support long-term durability and customer satisfaction.\u003c\/p\u003e","brand":"Hayden","offers":[{"title":"Default Title","offer_id":43944077951157,"sku":"BBTW-5989","price":54.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/HY_5989_Fro_6f353455-dd63-450d-a109-d79946c184b8.jpg?v=1775005270","url":"https:\/\/www.partcatalog.com\/products\/hayden-5989-accessory-drive-belt-idler-pulley","provider":"PartCatalog","version":"1.0","type":"link"}