{"product_id":"dayco-5070640-serpentine-belt","title":"Dayco 5070640 Serpentine Belt - Main Drive","description":"\u003ch2\u003eDurable Serpentine Belt for BMW and Rolls-Royce Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dayco 5070640 serpentine belt is engineered to meet the demanding requirements of BMW and Rolls-Royce models, including the 540i, 740i, 740iL, 760Li, 840Ci, Ghost, M5, M8, M8 Gran Coupe, Wraith, X5, and X6. Constructed from EPDM with aramid reinforcement, this belt offers reliable performance and longevity under various operating conditions.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMaterial: EPDM with aramid fiber reinforcement for enhanced durability\u003c\/li\u003e\n\u003cli\u003eTop Width: 0.96 inches\u003c\/li\u003e\n\u003cli\u003eEffective Length: Approximately 64 inches (1625.60 mm)\u003c\/li\u003e\n\u003cli\u003eOutside Circumference: Approximately 64.66 inches (1642.37 mm)\u003c\/li\u003e\n\u003cli\u003eRib Quantity: 7 ribs with a straight rib profile\u003c\/li\u003e\n\u003cli\u003eCross Section: K-section design for optimal fit and function\u003c\/li\u003e\n\u003cli\u003eOperating Temperature Range: -45°C to 212°F (-42.7°C to 100°C)\u003c\/li\u003e\n\u003cli\u003eComplies with SAE J1459 and SAE J2432 standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Overview of Dayco 5070640 Serpentine Belt\u003c\/h2\u003e\u003cp\u003eThis serpentine belt features a K-section cross section and seven straight ribs, designed to provide consistent power transmission to accessory drive components. The EPDM material combined with aramid reinforcement enhances resistance to heat, wear, and stretching, ensuring stable performance across a wide temperature range from -45°C to 212°F. The belt’s dimensions, including a top width of 0.96 inches and an outside circumference near 64.66 inches, are tailored to fit specific BMW and Rolls-Royce models precisely, reducing the risk of slippage or premature failure.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThe Dayco 5070640 serpentine belt is compatible with a range of BMW and Rolls-Royce vehicles, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBMW 540i, 740i, 740iL, 760Li, 840Ci, M5, M8, M8 Gran Coupe, X5, X6\u003c\/li\u003e\n\u003cli\u003eRolls-Royce Ghost, Wraith\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis belt is designed for use in accessory drive belt systems, ensuring proper operation of alternators, power steering pumps, air conditioning compressors, and other engine-driven accessories.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Serpentine Belt\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEliminates belt slippage and squealing noises\u003c\/li\u003e\n\u003cli\u003ePrevents premature belt wear and cracking\u003c\/li\u003e\n\u003cli\u003eMaintains consistent accessory drive performance\u003c\/li\u003e\n\u003cli\u003eReduces risk of overheating due to belt failure\u003c\/li\u003e\n\u003cli\u003eEnsures proper tension and alignment in the belt system\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dayco 5070640 serpentine belt, ensure the belt routing matches the vehicle’s specific diagram. Inspect pulleys and tensioners for wear or damage before installation. Proper tensioning is critical to avoid belt slippage or excessive wear. It is recommended to replace the belt tensioner and idler pulleys if they show signs of wear during belt replacement.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDayco serpentine belts are manufactured to meet SAE J1459 and SAE J2432 standards, ensuring compliance with industry specifications for durability and performance. The EPDM and aramid reinforced construction provides resistance to heat and wear, supporting long service life. Warranty coverage details should be confirmed with the product documentation or supplier.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":43391672778933,"sku":"BCWL-5070640","price":26.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_5070640_Fro.jpg?v=1774729204","url":"https:\/\/www.partcatalog.com\/products\/dayco-5070640-serpentine-belt","provider":"PartCatalog","version":"1.0","type":"link"}