1. According to the factory specifications, match for the car. 2. Own different test machines to design exact accurate parameter for our products. All items were tested for performance. 3. Made by material, anti-rust, colorfast. 4. Aftermarket product. 5. Stable performance, high reliability, suitable for replacing your broken one. Condition: Manufacturer Part Number: 4G0907397Q Other Part Number: 4G0907397Q Interchange Part Number: 4G0907397Q Type: Headlight Ballast Mounting Style: Screw-On Lighting Technology: Xenon Fitment Type: Direct Replacement Fitment: For A3 8V 2012-2016 For A6 C7-4G 2014-2017 For Q3 8U 2014-2018 For TT FV_8S 2014-2018 For 2015- For Rapid 5J 2017- For SuperB 3V 2015- Colour: Silver Material: Metal Package Contents: 1x 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.