Includes 1 belt, 1 tensioner, 3 idlers, 1 idler sprocket, 1 water pump, Subaru spacer tool, metal gasket and instructions. Gates Racing timing belts are 3x stronger and 3x more heat resistant than stock belts. High saturation HNBR elastomeric composites assist with exceptional durability and heat resistance. Reinforced tooth jacket provides extra wear resistance, doubling tooth strength. High strength glass cords further increase durability.