Headlight Driver Module Control Computer Ballast Fitment: Compatible With A-class A176 CLA117 Material: The headlight control module is made of metal, helping to ensure stable and efficient operation. Product Features: This headlight ballast is a reliable replacement for your existing parts. A malfunctioning ballast can cause headlights to stop working completely or operate intermittently. This headlight ballast is a trustworthy automotive accessory. Installation: Direct replacement, no modifications required. An ideal alternative to faulty parts. Note: We strive to provide clear images and dimensions, please verify the OEM information before purchasing ，to ensure this ballast is the product you need. If you are unsure whether the product is suitable, please feel free to contact me; I will be happy to assist you.