Description: Differential Control Module for Audi, genuine OEM part number 0CQ-907-554-K, also searched as 0CQ907554K. Fitment note from the Audi catalog: From 04/17/2017. From 11/06/2017. From 08/27/2018. To 08/27/2018. Also known as Control Unit. This is the factory original component, not a reproduction or aftermarket alternative. Sold by Audi Henderson, an authorized Audi dealer serving Henderson and Las Vegas, NV, and covered by Audi's manufacturer warranty.