{"product_id":"four-seasons-45991-accessory-drive-belt-idler-pulley","title":"Four Seasons 45991 Accessory Drive Belt Idler Pulley","description":"\u003ch2\u003eReliable Accessory Drive Belt Idler Pulley for Chevrolet and GMC\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pulley 45991 is a durable accessory drive belt idler pulley designed specifically for Chevrolet and GMC models including the S10, S10 Blazer, S15, and Sonoma. Engineered to meet or exceed OEM standards, this black plastic pulley ensures consistent serpentine belt tension and smooth operation.\u003c\/p\u003e\u003ch2\u003eKey Features of Four Seasons Pulley 45991\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConstructed from high-quality black plastic for durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eDesigned as an idler\/tensioner pulley with a single mount hole for secure installation\u003c\/li\u003e\n\u003cli\u003eCompatible with serpentine belts featuring 6 grooves and 1-inch (25.4 mm) width\u003c\/li\u003e\n\u003cli\u003eInside diameter of 0.46875 inches (12.0 mm) and outside diameter of 5.1875 inches (131.763 mm)\u003c\/li\u003e\n\u003cli\u003eMeets or exceeds OEM specifications for reliable performance\u003c\/li\u003e\n\u003cli\u003ePart number 45991 ensures exact fit for Chevrolet S10, S10 Blazer, S15, and GMC Sonoma models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the Four Seasons Pulley Product Line\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pulley line focuses on accessory drive belt system components engineered for precise fit and function. This product line includes idler and tensioner pulleys designed to maintain proper belt tension and alignment, reducing wear and extending the life of serpentine belts. The 45991 pulley is part of this line, providing a direct replacement solution for select Chevrolet and GMC vehicles.\u003c\/p\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThis accessory drive belt idler pulley features a 6-groove design compatible with serpentine belts that are 1 inch (25.4 mm) wide. The pulley’s black plastic construction offers resistance to heat and wear, while the 0.46875-inch inside diameter and 5.1875-inch outside diameter ensure proper belt tracking. The single mounting hole allows for straightforward installation, although mounting hardware is not included. Designed to maintain optimal belt tension, this pulley helps prevent belt slippage and premature wear in the accessory drive system.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Issues Addressed\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReplacement for worn or damaged idler pulleys in Chevrolet S10, S10 Blazer, S15, and GMC Sonoma vehicles\u003c\/li\u003e\n\u003cli\u003eEliminates belt noise caused by misalignment or pulley wear\u003c\/li\u003e\n\u003cli\u003ePrevents serpentine belt slippage and associated accessory malfunctions\u003c\/li\u003e\n\u003cli\u003eAddresses belt tension loss that can lead to overheating or battery charging issues\u003c\/li\u003e\n\u003cli\u003eRestores proper belt routing and tension in accessory drive systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVerify compatibility with your vehicle’s make, model, and year before installation\u003c\/li\u003e\n\u003cli\u003eEnsure the serpentine belt width and groove count match the pulley specifications\u003c\/li\u003e\n\u003cli\u003eUse appropriate tools to remove the old pulley and install the new one securely\u003c\/li\u003e\n\u003cli\u003eCheck belt alignment and tension after installation to avoid premature wear\u003c\/li\u003e\n\u003cli\u003eNote that mounting hardware is not included and may need to be reused or replaced\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eThe Four Seasons Pulley 45991 is manufactured to meet or exceed OEM quality standards, ensuring reliable performance and durability. While specific warranty details may vary, Four Seasons products typically come with a limited warranty against defects in materials and workmanship. This pulley is engineered to provide consistent operation within the accessory drive belt system of compatible Chevrolet and GMC vehicles.\u003c\/p\u003e","brand":"Four Seasons","offers":[{"title":"Default Title","offer_id":44599921311925,"sku":"BBRN-45991","price":30.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/FS_45991_Fro.jpg?v=1775068459","url":"https:\/\/www.partcatalog.com\/products\/four-seasons-45991-accessory-drive-belt-idler-pulley","provider":"PartCatalog","version":"1.0","type":"link"}