1. The product is made of premium material with sturdy and exquisite workmanship that will mostly improve its durability in use,practical and durable. 2. It is easy to install without any modification that it could perfect fit for your car due to its manufacture part number standard. 3. Perfect to replace worn out,damaged or broken ones.Strict quality control standards for the long service life. 4. Stable performance,high reliability.Professional Performance Auto parts supplier. Control unit module is a necessary parts in HID,the quality of ballast directly affects the function and life of xenon lamp.Protection function should have over pressure protection,low pressure protection,no-load protection,short circuit protection,reverse connection protection,waterproof and anti-vibration performance and so on. Description: Condition:New Placements:Left Side Fitment Type:Direct Replacement Part Number:A2229003013,2229003013,A222 900 30 13 Other Part Number: A2229000415,2229000415,A222 900 04 15 A2139007308,2139007308,A213 900 73 08 A2139005006,2139005006,A213 900 50 06 A2139005304,2139005304,A213 900 53 04 Compatible for:(For The Reference Only) C-Class W205 S205 2017- E-Class W213 S213 2016- S-Class W222 X222 2017- E-Class Coupe C238 2016- E-Class Cabriolet A238 2017- CLS-Class Coupe C257 2018- G-Class W463 2018- Colour:silver Material:Metal Package Contents: 1 x LED Headlight Ballast Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.