The Audi V8 Quattro uses a 9005 bulb size for high beam headlights and a 9006 bulb size for low beam headlights. The replacement chart covers 1990 to 1994 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Audi V8 Quattro uses the 9005 bulb for high beam headlights and the 9006 bulb for low beam headlights across all model years from 1990-1994.
Both the 9005 and 9006 are ANSI-standardized halogen bulbs, meaning their physical and electrical specifications are governed by a North American industry standard applicable in the United States and Canada.
The 9005 is a single-filament halogen bulb rated at 12V and 65W, fitted with a P20d base, and serves the high beam function in the V8 Quattro.
The 9006 is a single-filament halogen bulb rated at 12V and 55W, fitted with a P22d base, and serves the low beam function. Its lower wattage relative to the 9005 reflects the reduced output typical of low beam applications.
The P20d and P22d base designations on the 9005 and 9006 respectively are physically distinct, which means the two bulb types are not interchangeable despite their similar appearance and shared voltage rating.
The 10-watt difference between the 9005 (65W) and 9006 (55W) corresponds to a difference in luminous output, with the higher-wattage 9005 producing greater light intensity suited to high beam use.