INA + Contitech Drive Belt Kit BMW: 1 Series M 2011; 135i 2008-2010; 335i 2007-2010; 335i xDrive 2009-2010; 335is 2011-2013; 335xi 2007-2008 Please be sure your vehicle is listed in the compatibility chart. This kit fits ONLY the vehicles listed. This Kit Contains: 1-Contitech Drive/Serpentine Belt 7PK1855 (BMW OE #: 11287628652) 1-INA Belt Tensioner Assembly (BMW OE #:11287563927) 1-INA 80mm Diameter Idler Pulley (BMW OE #: 11287556251) 1-INA 90mm Diameter Idler Pulley (BMW OE #: 11287557851) Sold as a kit with a 2 year warranty. FREE USPS PRIORITY SHIPPING ContiTech Multi Rib (Serpentine) Belt ContiTech Serpentine Belts come in a wide range of sizes and are designed to be oil-resistant and temperature-stable from -22F to 176F (-30C to 80C). ContiTech Serpentine Belts deliver 98% power efficiency. While a lower profile design easily handles higher engine revs, reducing noise and providing cooler running temperatures. High performance construction features include polychloroprene rubber cover and body, polyester fiber tensile members, and a ribbed belt design. Features and Benefits: OE-Equivalent. Direct fit for easy installation. Resistant against wear, oil and heat. Temperature-stable from -22F to 176F (30C to 80C). Delivers over 98% power efficiency. High performance construction. Polychloroprene rubber cover and body. Polyester fiber tensile members and a ribbed belt design. INA Accessory Belt Tensioner Assembly The INA Accessory Belt Tensioner Assembly is a direct fit OEM replacement that contains the same high quality craftsmanship and materials as the original equipment it replaces. Features and Benefits: OE-Equivalent and a direct fit application High quality precision spring tension assembly OE specified bearing and pulley assembly Durable long life performance INA Accessory Belt Idler Pulley The INA Accessory Belt Idler Pulley is a direct fit OEM replacement that contains the same high quality craftsmanship as the original equipment it replaces. Features and Benefits: OE-Equivalent and a direct fit application. Precision bearing OE High quality pulley assembly Durable long life performance.