New GM power steering pump pulley.  Stock replacement pulley.  This pulley is only for Corvette LS2/LS3/LS7 power steering pumps.  Fits the following:

05-13 LS2/LS3/LS7 Corvette

NOTE : Power steering pulleys look similar, but are not. Pump shaft diameter and belt alignment are different on just about every pulley. Also, the outside diameter of the pulley and crank pulley is directly related to the output pressure of the pump. Changing outside diameters effects steering! Therefore, pulleys are application specific, and will only work with the listings we have provided.

INSTALLATION NOTE : Power steering pulleys are typically pressed onto the pump. A special tool is normally required for removal, and another special tool is normally required for pulley installation. A qualified mechanic should install these if you are not equipped properly.