URO 4E0-907-476 Xenon HID Headlight Ballast Control Unit

The URO 4E0-907-476 is a xenon HID headlight ballast control unit designed as a direct replacement for Audi A6, A8, S6, and S8 models. This critical component regulates the electrical current required to power xenon headlight systems, providing the high-voltage pulse needed to ignite HID bulbs and maintaining stable power output during operation.

Key Features:

• Direct replacement for OEM part number 4E0-907-476
• Compatible with xenon headlamp systems with directional beam functionality
• Fits both left and right headlight positions
• Plug-and-play installation with no coding required
• Cross-references to BMW part number 63-12-6-907-488

This ballast module is commonly used in vehicles equipped with factory xenon headlights and addresses symptoms such as flickering headlights, slow startup, or complete headlight failure. When xenon headlights fail, the ballast is the most common culprit, making replacement of this component a cost-effective alternative to replacing the entire headlight assembly.

Note: Included with headlamp assembly when purchased new. This is sold as an individual replacement unit for service and repair.