Porsche 924 Dome Light Bulb Size

The Porsche 924 dome light requires a 6411 bulb size for proper illumination within the interior cabin area. Available data for the specified lighting component covers the period from 1977 to 1988.

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
1987-1988	6411
1977-1982	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 6411 is the sole dome light bulb size listed across all model years of the Porsche 924 covered by these specifications.
The 6411 bulb follows the ANSI standard, meaning it conforms to a standardized designation recognized across the United States and Canada.
It 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 6411 uses an SV8.5 base, a designation that refers to the end-cap contact style common to festoon bulbs of this size class.
The bulb operates at 12 volts and draws 5 watts, consistent with low-power interior lighting applications in 12-volt automotive electrical systems.
The festoon length of 36mm is a physical fitment factor, as dome light housings are designed to hold bulbs of a specific length between their contact clips.
The Porsche 924 uses the 6411 specification across the 1977-1982 and 1987-1988 model years listed in these specifications.
Because the 6411 is an ANSI-standardized bulb, it is produced by multiple manufacturers, though physical and electrical conformance to the 36mm festoon format and SV8.5 base remains a fitment requirement.