1Fitment: It is replacement for A?Klasse W168 W169, replacement for B?Klasse W245, replacement for Cls?Klasse C218, replacement for E?Klasse Coupe C207, replacement for S?Klasse W220 W221, replacement for M-Klasse W164. 2OE Number: The reference part number of the relay is A0025427619. Please double check the part number of your item. 3Premium Material: This air suspension relay is made of premium Abs and metal materials, which are impact resistant and can be used for a long time. 4Ideal Replacement: This air suspension relay is a perfect replacement, and you can directly replace worn or damaged ones to save time. 5Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability.