Description: For A/C Belt. Water Pump, Air Conditioning, Alternator, Power Steering, Air Pump. S-series. 2.8l. With ac. Allows for the operation of various pulleys, and drive belt accessories, with the use of a single belt Creates a secure point of contact with the pulley, which allows for traction Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type