Variator drive belt 729×17.7 "PREMIUM TNT" (manufacturer TNT). The first number in the marking is the belt length in mm; the following ones are the width and angle or other dimensions. The belt transmits torque from the engine through the variator to the rear wheel.
Replace it if there are cracks, worn teeth, chipping, slipping during acceleration, or if the belt is stretched. Do not let oil get on the belt, and when replacing it, check the variator rollers and pulleys.
