Builtin high pressure bag for fast startup & safe stability Aluminum shell for better heat dissipation and vibration resistance performance Treated with adhesive glue irrigation for better waterproof & shockproof performance 6 protections against overpressure, low pressure, overheating, no-load, short circuit, reverse connection for more safety and durability Coding is required once repplaced with new A2539007000 headlight module , Programming required for use Type: Car Headlight Programmable Control Unit Module Ballast Condition: Fitment: Direct Replacement Power: 35W Waterproof rate: IP 68 Operation voltage: DC 12V Placement on Vehicle: Left Side Part Number: A2539007000 Interchange Part Number: A2539010500, A253 901 05 00, A2539028900, A253 902 89 00, 504211R14, A2539000700, A253 900 07 00 Fitment: For - GLC -Class X253 W253 2015 2016 2017 2018 2019 For - W253 GLC200 GLC220 GLC250 GLC300 GLC350 GLC43 GLC63 For compatibility list GLC X253 W253 Hatchback 2015 2016 2017 2018 2019 GLC C253 Coupe 2015 2016 2017 2018 2019 GLC220d GLC250d GLC350d BlueTEC 4MATIC GLC200 GLC250 GLC300 Petrol Gasoline GLC350e Plug-In Hybrid GLC43 GLC63 2.0L 3.0L V6 4.0L V8 Line Material: plastic+metal colour: Silver+Black Package Contents: 1 x Headlight Control Unit 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.