ACDelco K0EG2 Professional Drive Belt Coupler and Decoupler Pulley Kit with Coupler and Pulley Specialized design for specific VW and Volvo vehicles Lubricated jacket minimizes coupling and end piece wear and retains tooth integrity during operation Glass fiber cord provides excellent dimensional stability at high rotational speeds Equipped with fiber loaded construction that maximizes torque capability, controls damping, and provides excellent age resistance The couplings flexibility tolerates misalignment in components