Feature: 1. Interchange Part Numbers: 1J0 941 641, 4D0 907 476 B, 7M3 907 391, 1T0 907 391, 63 12 6 918 593, 63 12 7 176 068, 63 12 6 912 114, 63 12 6 907 496, 63127176068, 63120406709, etc. 2. High Compatibility: Replacement compatible with A8 S8 2001‑2003, replacement compatible with 3 series E46 Coupe Convertible 2002‑2003, replacement compatible with Land Rover Range Rover 2003‑2005 and much more models. 3. Main Function: Used to convert the voltage, stabilize the current, and protect the pulse surge to ensure that the headlights work in a safe environment and extend the life of the headlights. 4. Reliable Materials: The xenon headlight ballast is made from superior aluminium alloy which is heat dissipation, vibration and wear resistant, high temperature resistant, oxidation resistant. 5. Easy Installation: Manufactured with surface mount and through hole components compatible with direct plug and play replacement, no programming or coding required compatible with the car, and suitable compatible with left or right headlights. Specification: Item Type: Headlight Control Unit Material: Aluminium Alloy Bulb Type: D2R D2S D1R D1S Input Voltage: DC12V Output Power: Maximum 35W Installation Position: Left or Right Side Headlight Interchange Part Numbers: 1J0 941 641, 4D0 907 476 B, 7M3 907 391, 1T0 907 391 63 12 6 918 593, 63 12 7 176 068, 63 12 6 912 114, 63 12 6 907 496 Replacement compatible with Cooper Part: 63127176068, 63120406709, 63126907469, 63126912114, 63126918593 Replacement compatible with Mercedes -Benz Part: A 140 820 88 26, A 203 820 16 85, A 230 820 19 26, A 203 820 25 26, A 230 820 84 26, A 203 820 88 85, A 203 820 93 85, A 220 820 85, A 220 820 38 85, A 220 820 57 26, A 220 820 83 26, A 230 820 19 26, A 230 820 84 26, 222-900-81-05, 222-900-08-06, 222- 900-17-04, 222-900-45-05, 222-900-81-05, 222-900-08-06, 222-900-17-04 Replacement compatible with Maserati Part: 980001133 Replacement compatible with Mazda Part: G22E510H3A Replacement compatible with Range Rover Part: YWC000500 1T0907391 Fitment: Replacement compatible with TT VIN 1003501 and up 2001 Replacement compatible with TT 2002-2006 Replacement compatible with A8 S8 2001-2003 Replacement compatible with 3 series E46 Coupe Convertible 2002-2003 Replacement compatible with 3 series E46 Sedan Wagon 2002-2005 Replacement compatible with M3 E46 2002-2006 Replacement compatible with 6 series E63 E64 pre-LCI 2004-2007 Replacement compatible with M6 pre-LCI 2006-2010 Replacement compatible with X3 E83 pre-LCI 2004-2006 Replacement compatible with Land Rover Range Rover 2003-2005 Replacement compatible with Mercedes -Benz C-class W203 2002-2007 Replacement compatible with Mercedes -Benz CLK-class C209 2003-2006 Replacement compatible with Mercedes -Benz SL-class R230 2003-2007 Replacement compatible with Mercedes -Benz CL-class C216 2003-2005 Replacement compatible with Mercedes -Benz S-class W220 2003-2006 Replacement compatible with Cooper Cooper S R50 R52 2002-2006 Replacement compatible with Cooper Converitble R53 2002-2006 Replacement compatible with Mazda 6 2003-2008 . Package List: 1 x Headlight Control Unit Note: 1. To properly diagnose your headlight fault, try moving the ballast from your working side to the non working side. If the headlight begins to work, this replacement ballast will fix the problem. If the problem persists, a different component is causing the fault, most likely the igniter, bulb, or wiring.2. Please double check the part number of your item, matching incompatible withmation is compatible with reference only.3. If you are unsure of the item, please contact us becompatible withe buying to avoid unnecessary return, thanks!