URO 8E0907391B High Intensity Discharge (HID) Lighting Ballast

Overview

This URO HID lighting ballast, part number 8E0907391B, is a replacement component for European vehicle lighting systems that require stable high-intensity discharge operation. It is built with an aluminum housing and a plug-style female connector for straightforward electrical integration.

Compatible With Audi A4, Audi A4 Quattro, Audi S4, Audi A3, and Audi A3 Quattro applications across the listed model years, this ballast is a fitment-based replacement for vehicles using the specified factory configuration. The 8E0907391B part number is also useful when cross-checking service records or matching an existing unit.

Key Features

• High intensity discharge lighting ballast for exterior lighting systems.
• Aluminum housing for a durable electronic enclosure.
• Plug connector with female terminal design.
• Replacement part from URO, a brand focused on OEM-specification components for European vehicles.
• Part number 8E0907391B for accurate catalog matching.

Detailed Description

URO 8E0907391B is a HID ballast designed as a direct replacement-style electrical component for select Audi lighting applications. It supports the operation of the HID system by regulating the electrical output required for proper lamp function. The aluminum housing provides a rigid enclosure for the electronics, while the plug connection simplifies identification during service. For Audi A4, Audi A4 Quattro, and Audi S4 models, as well as Audi A3 and Audi A3 Quattro applications in the listed years, this part number helps confirm the correct replacement when the original ballast has failed.

URO parts are positioned as OEM-specification replacements for European vehicles, and the 8E0907391B ballast follows that approach for service work where accurate fitment matters. This part cross-references Dorman - OE Solutions 601-126 for the same application.

What It Is Used For

• Restoring HID headlamp operation when the ballast is no longer functioning.
• Addressing intermittent lighting output caused by an electrical ballast fault.
• Replacing a damaged or corroded ballast housing.
• Matching the original part number during lighting system repair.

Installation Notes and Tips

Verify the original part number and connector style before ordering. Confirm chassis-range notes for 2005 Audi A4, A4 Quattro, and S4 applications, since those listings apply only from chassis 400001 and later. Inspect the connector and surrounding wiring for heat damage, corrosion, or moisture intrusion before installing the replacement ballast.

Quality Assurance

URO Parts components are manufactured to meet or exceed OEM specifications for European vehicles. URO Premium products are backed by an unlimited mileage, lifetime warranty.