Genuine OEM Xenon Headlight Control Module Computer Ballast. Should fit Newer C-Class and some S-Class Vehicles. Good Working Condition. What you see in the pictures is Exactly what you will recive. This Listing is for ONE Ballast .There are several diferent ballasts that where used on these cars, Please make sure part number maches to your aplication Before purchase. Part# A204 870 0126  Part number must match exactly for it to work in your car. May require programing.

Buyer is solely responsible for determining compatibility with their car. Please check the pictures to see if yours matches.