... so on. Strength of timing belt is optimized for each vehicle.Even expansion of engine by heat is considered ... high torque. High density H-NBR is used for teeth rubber to strengthen teeth portion.We supply ... Timing belt,Auto V-Belt,Flat belt) ,used for auto,industrial and so on.Used on camshaft ... Audi, Volkswagen and ect.Here are some part numbers for our Auto timing belt:13568-15050, 13568-19135, 13568 ...