Volkswagen Vanagon front and rear side marker bulbs utilize a 3893 bulb size across both positions. The replacement chart covers vehicle production spanning 1980 to 1991.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Volkswagen Vanagon uses the 3893 bulb for both its front and rear side marker positions across the entire 1980-1991 model range.
The 3893 is an ANSI-standardized bulb type, meaning its physical and electrical specifications conform to a defined North American standard recognized in both the United States and Canada.
The 3893 bulb operates on a 12-volt electrical system, which is consistent with standard automotive DC voltage.
A dual-filament design means the 3893 bulb contains two separate filaments within a single envelope, allowing it to serve more than one lighting function from a single socket.
The BAY15d bayonet base is a two-pin bayonet mount where the two pins are offset at different heights, a physical feature that prevents incorrect insertion orientation during installation.
The 3893 is classified as a specialty application bulb, distinguishing it from general-purpose automotive bulbs in the same voltage and base category.
Because the BAY15d base uses offset pins, it is not interchangeable with the BA15d base, which shares the same two-pin bayonet style but with pins at equal heights.
The front and rear side marker positions on the Vanagon share the same bulb type, meaning a single 3893 bulb specification covers all four side marker sockets on the vehicle.