Specification: Idle speed control valve, usually called idle air control valve, The stepping motor type idle speed control valve is the most widely used idle speed control device in the world. It is used for the opening of the bypass air passage of the automobile electronic injection system to adjust the bypass air volume so that the engine speed reaches the required target value. There is a coil in the valve that can be opened and closed to adjust the air flow. Electronic control means maintaining the proper air volume during engine load changes. Part Number: 2222650-AA182/22650-AA181 Fitment: For 2002-2005 WRX EJ205 For 2002 2003 2004 2005 SUBARU .