The Audi 200 high beam and low beam headlight bulbs both utilize a 9004 size. The replacement chart covers 1989 to 1991 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 9004 bulb is a dual-filament halogen type, meaning a single bulb contains two separate filaments to produce both high and low beam output from one unit.
The 9004 operates at 12 volts and draws 65 watts on the high beam filament and 45 watts on the low beam filament, reflecting the greater light output required for high beam use.
The 9004 uses a P29t base, which is a specific pin and collar configuration that physically determines which sockets the bulb fits and how it aligns within the headlight housing.
The 9004 is an ANSI-standardized bulb approved for use in the United States and Canada, meaning it conforms to a defined set of electrical and photometric requirements for those markets.
In the Audi 200, the 9004 bulb serves both the high beam and low beam headlight positions across the 1989-1991 model years, so a single bulb type covers both functions in this vehicle.
Because the high beam and low beam positions share the same 9004 specification, the two headlight assemblies are not served by separate dedicated single-filament bulbs, as is the case in some other headlight system designs.