Volkswagen 411 front and rear side marker bulbs utilize a 97 size bulb configuration. The replacement chart covers 1971 to 1973 model 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 97 bulb is the sole bulb type specified for the Volkswagen 411 across all listed side marker positions and model years.
The 97 is an ANSI-standard bulb recognized in both the United States and Canada, operating at 12 volts with a 13-watt output.
It uses a BA15s bayonet base, which is a single-contact base design that seats the bulb with a twist-lock motion into a corresponding socket.
The 97 is a single-filament bulb, meaning it serves one lighting function rather than switching between two brightness levels as a dual-filament bulb would.
The 97 is classified as a variant of the 1156 bulb, though the two are not identical and the distinction is relevant to fitment.
The Volkswagen 411 uses the same bulb size, 97, for both the front and rear side marker positions across the 1971-1973 model years.