Features: 1.Fitment: This idle air control valve is designed to match the fit and function of the original part on specified vehicles, replacement for Opel Astra 1998?2000; Replacement for Opel Corsa 1996?2000; Replacement for Vauxhall Corsa 1996?2000. 2.OEM: The OEMs of this control valve are 90531999 and 825485 for reference, please check the part number of your item before purchasing. 3.Main Purpose: Idle air control valve is controlled by the onboard computer, the computer moves the pintle in and out of an opening that bypasses the throttle blade, and IAC valve allows the computer to precisely control idle speed when varying loads are placed on the engine. 4.Strong Construction: This idle air control valve is made from stable ABS material, which is wear and rust resistant, maximizing its long term durability. 5.Excellent Performance: Strictly manufactured in accordance with original part and has undergone rigorous quality testing to ensure its proper operation. Specification: Item Type: Idle Air Control Valve OEM: 90531999, 825485 Fitment: Replacement for Opel Astra 1998-2000 Replacement for Opel Corsa 1996 - 2000 Replacement for Vauxhall Corsa 1996 - 2000 Note: 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!