{"product_id":"four-seasons-45984-accessory-drive-belt-idler-pulley","title":"Four Seasons 45984 Accessory Drive Belt Idler Pulley","description":"\u003ch2\u003eOverview of Four Seasons Pulley 45984\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pulley 45984 is a precision-engineered accessory drive belt idler pulley designed for select BMW models. This black plastic back idler pulley supports serpentine belt systems, ensuring smooth operation and reliable tension management for your vehicle's accessory drive components.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaterial: Durable black plastic construction\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 2.750 inches (69.85 mm)\u003c\/li\u003e\n\u003cli\u003eInside Diameter (Bore): 0.375 inches (9.525 mm)\u003c\/li\u003e\n\u003cli\u003eWidth: 1.125 inches (28.6 mm)\u003c\/li\u003e\n\u003cli\u003eBelt Type Compatibility: Serpentine belts with 1.125 inch (28.575 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 specifications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFour Seasons Pulley Product Line Details\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pulley product line focuses on delivering reliable accessory drive belt system components tailored to specific vehicle applications. The Pulley line includes idler and tensioner pulleys engineered to meet OEM standards, providing consistent belt alignment and tension. The 45984 model exemplifies this line by offering a back idler pulley designed for smooth serpentine belt operation in BMW vehicles.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis accessory drive belt idler pulley is constructed from high-quality plastic to provide a balance of durability and lightweight performance. Its smooth groove surface ensures minimal belt wear and noise during operation. The pulley’s dimensions, including a 2.750 inch outside diameter and 0.375 inch bore diameter, are engineered to fit serpentine belts with a width of 1.125 inches, making it compatible with specific BMW models such as the 530i, 540i, 740i, 740iL, and 840Ci. The single mounting hole design facilitates straightforward installation, although mounting hardware is not included.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement of worn or damaged idler pulleys in BMW 530i, 540i, 740i, 740iL, and 840Ci models\u003c\/li\u003e\n\u003cli\u003eResolving belt misalignment or slipping in serpentine belt systems\u003c\/li\u003e\n\u003cli\u003eEliminating noise caused by pulley bearing wear or surface damage\u003c\/li\u003e\n\u003cli\u003eMaintaining proper belt tension to prevent accessory drive system failures\u003c\/li\u003e\n\u003cli\u003eSupporting smooth operation of alternator, power steering, and air conditioning belts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify compatibility with your BMW model before installation\u003c\/li\u003e\n\u003cli\u003eInspect the serpentine belt for wear and replace if necessary during pulley installation\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to remove the old pulley and install the new one securely\u003c\/li\u003e\n\u003cli\u003eNote that mounting hardware is not included; retain or replace existing bolts as needed\u003c\/li\u003e\n\u003cli\u003eEnsure proper belt alignment after installation to avoid premature wear\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pulley 45984 meets or exceeds OEM specifications, ensuring reliable performance and durability. This part undergoes quality control inspections to maintain consistent standards. Please consult Four Seasons or your parts provider for specific warranty details related to this pulley.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44599916527797,"sku":"BBRN-45984","price":43.44,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_45984_Fro.jpg?v=1775068458","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-45984-accessory-drive-belt-idler-pulley","provider":"PartCatalog","version":"1.0","type":"link"}