The back of the belt is made of a high abrasion-resistant EPDM rubber
Tension cords are made of polyester fibre or aramid and are therefore particularly stable in length
High quality materials mean the belt can transmit higher forces while also being extremely flexible, in order to drive many units in the tightest of spaces
Service Tip: Always replace belts and tensioners together. Old tensioners will reduce a belt's lifespan, and can lead to issues such as overheating, a dead battery, diminished power steering, or poor air conditioning performance.