Standard Ignition HID155 High Intensity Discharge (HID) Lighting Ballast

HID Ballast for Audi and Volkswagen

Standard Ignition HID155 is a high intensity discharge lighting ballast for select Audi and Volkswagen applications. It is built with one female connector and one male terminal connection to match the original electrical interface on supported vehicles.

Compatible With 2007-2011 Volkswagen Eos, 2008-2010 Volkswagen Passat, and 2007-2009 Audi Q7. Standard Ignition HID155 is also cross-referenced to OE-style part number 4L0907391 for the same application.

Key Features

• High Intensity Discharge (HID) lighting ballast
• Female connector gender
• 1 connector quantity
• Male terminal gender
• 1 terminal quantity
• Direct-fit electrical replacement for supported HID headlamp systems

Detailed Description

Standard Ignition HID155 is an exterior lighting ballast used in HID headlamp systems to regulate and support proper lamp operation. It is specified with a single female connector and a single male terminal, which helps match the factory-style electrical connection on the listed Audi and Volkswagen vehicles. For buyers searching for a 2007-2011 Volkswagen Eos HID ballast, a 2008-2010 Volkswagen Passat HID ballast, or a 2007-2009 Audi Q7 HID ballast, this part number provides a direct reference point for the correct application.

The HID155 part number is also useful when cross-shopping OE and aftermarket listings, including 4L0907391. If you are replacing a failed ballast on a Volkswagen Eos, Volkswagen Passat, or Audi Q7, confirming the connector style and vehicle year is the fastest way to verify the match.

Common Problems This Part May Solve

• HID headlight does not turn on
• Intermittent low-beam or HID lamp operation
• Ballast-related flickering or shutdown
• Electrical fault at the headlamp ballast connection
• Replacement need after ballast failure on factory HID lighting

Installation Notes and Tips

Verify the vehicle year, make, and model before ordering. Match the connector gender and terminal layout to the original unit, and inspect the headlamp housing and wiring for corrosion, heat damage, or broken terminals before installation. After replacement, confirm proper HID lamp ignition and stable operation on both sides if applicable.

Quality Assurance

Standard Ignition supplies electrical replacement parts for OE-style applications, and HID155 is cataloged for the listed Audi and Volkswagen fitments. Confirmed vehicle coverage includes 2007-2011 Volkswagen Eos, 2008-2010 Volkswagen Passat, and 2007-2009 Audi Q7.