1、When the engine idle load increases, the ECU controls the idle control valve to increase the air intake, thus increasing the idle speed, to prevent the engine speed instability or flameout. 2、When the engine idle load is reduced, the ECU controls the idle control valve to reduce the air intake, thus reducing the idle speed to avoid excessive idle speed. 3、Simple installation, replace your old or broken ones directly, convenient to use. 4、Made of high quality aluminum material, sturdy, durable and long service life. 5、Replace OEM number for reference is 0280140549, 13411247197, 13411433627, 13411709932. Condition: 100% Brand New Item Type: Idle Air Control Valve Material: Aluminum Color: As Pictures Shown Quantity: 1PCSOEM: 0280140549 13411247197 13411433627 13411709932 Weight: Approx. 420g Fitment: 3-series four-door sedan (E30) [1982-1992] 3-series four-door sedan (E36) [1990-1998] 3 series hatchback/hatchback (E36) [1994-2000] 3 series convertible (E30) [1983-1993] 3 series convertible (E36) [1993-1999] 3 Series  coupe (E36) [1991-1999] 3 Series  station wagon (E30) [1987-1994] 5-series four-door sedan (E34) [1987-1995] 5-series station wagon (E34) [1991-1997] 1 x Idle Air Control Valve