Volkswagen Dasher Dome Light Bulb Size

The Volkswagen Dasher dome light requires a 6411 bulb size for proper illumination. The replacement chart covers vehicle production spanning 1978 to 1981.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1978-1981	6411

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 36mm length, SV8.5 base. 12V, 5W.	6411

Other Locations

Additional Notes

The Volkswagen Dasher uses the 6411 bulb for the dome light across the 1978-1981 model years.
The 6411 is an ANSI-standardized bulb, meaning its physical and electrical specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 6411 is a festoon-type bulb, which is a cylindrical lamp that makes contact at both ends rather than through a screw or bayonet base.
The bulb measures 36mm in length, which is the span between its two end caps and determines whether it fits a given festoon holder.
It uses an SV8.5 base, a designation that refers to the end-cap style and the 8.5mm width of those caps, which must match the socket width in the vehicle's dome light housing.
The 6411 operates at 12 volts, consistent with the standard electrical system voltage of passenger vehicles of that era.
The bulb carries a 5-watt rating, placing it in the low-wattage range typical of interior courtesy lighting.
Because festoon bulbs are sized by length and cap width, substituting a bulb with a different length or a different base designation than SV8.5 would result in an improper fit in the Dasher's dome light socket.