Volkswagen EuroVan front turn signal bulbs use P21/5W size while rear turn signal bulbs use P21W size. The replacement chart covers 1993 to 2003 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 Volkswagen EuroVan uses two distinct bulb types across its turn signal positions: the P21/5W at the front and the P21W at the rear, both conforming to ECE standards used in Europe and worldwide.
The P21/5W is a dual-filament bulb rated at 12V with a 21W primary filament and a 5W secondary filament, mounted on a BAY15d bayonet base. The offset pins of the BAY15d base ensure the bulb is inserted in only one orientation, which is necessary for correct filament assignment.
The P21W is a single-filament bulb rated at 12V and 21W, mounted on a BA15s bayonet base. The BA15s base features two symmetrically placed pins, distinguishing it physically from the offset BAY15d base used by the P21/5W.
Because the BAY15d and BA15s bases are physically different, the front P21/5W and rear P21W bulbs are not interchangeable with each other.
The front turn signal position of the Volkswagen EuroVan uses the P21/5W across all listed model years from 1993 through 2003.
The rear turn signal position uses the P21W across all listed model years from 1993 through 2003, maintaining consistency with the single-filament requirement of a dedicated turn signal circuit.
The dual-filament design of the P21/5W in the front position allows a single bulb to serve more than one lighting function, with the 21W filament typically assigned to the turn signal and the 5W filament to a secondary function such as a parking or position light.
Both the P21/5W and P21W operate on a 12V electrical system, consistent with the standard automotive voltage used in the EuroVan.