The Volkswagen EuroVan brake component requires a P21/5W bulb size for proper operation and visibility on the road. Available data for the specified vehicle covers the period from 1993 to 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Volkswagen EuroVan uses the P21/5W bulb for brake lighting across all specified model years from 1993 to 2003.
The P21/5W is an ECE-standard dual-filament bulb rated at 12V with a 21W main filament and a 5W secondary filament, mounted on a BAY15d bayonet base.
The dual-filament design of the P21/5W allows a single bulb to serve two distinct lighting functions, with the higher-wattage filament typically handling the brake signal and the lower-wattage filament handling a secondary function such as tail lighting.
The BAY15d bayonet base features offset pins, which physically prevents incorrect installation of a single-filament bulb in place of the dual-filament P21/5W.
The center high mount stop light on the Volkswagen EuroVan uses the 12961 bulb across all specified model years from 1993 to 2003.
The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The T10 wedge base of the 12961 is a single-filament design, consistent with its dedicated use in the center high mount stop light, which serves only one lighting function.
The P21/5W and the 12961 are not interchangeable, as they differ in base type, filament count, and wattage output.