Gates K060850 Serpentine Belt ela Stretch belt  Designed for direct replacement on accessory drives requiring stretch-type belts, Gates ela belts are specifically designed for two- to four-point drives where the elastic belt design maintains constant tension on the drive. Deep Rib belt  Gates discovered that certain import applications perform quietest when the rib depth of the serpentine belt is increased. Gates added layers of material, increasing the rib depth of the Deep Rib belt, resulting in the best drive belt option for specific import vehicle applications. Double-sided belt Designed for multiple accessory drives that require the transmission of power from both sides of the belt. The Double-Sided belt, which Gates introduced to the automotive aftermarket, features a construction that uses a highly fiber-loaded compound on both sides of the belt to maximize load carrying requirements while minimizing pulley misalignment noise. Direct OEM replacement The highest quality timing belts on the aftermarket