Subaru GLF Dome Light Bulb Size

The Subaru GLF dome light requires bulb size 67, bulb size 257, or bulb size 57 depending on the specific vehicle configuration. Data for the bulb sizes covers the range from 1980 to 1982.

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
1982	67
1981	257
1980	57

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67
ANSI standard (US & Canada). Festoon or BA9s base instrument bulb. 12V, 2W.	257
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 1W.	57

Other Locations

Additional Notes

The Subaru GLF uses three distinct dome light bulb types across its 1980-1982 model years, with no single bulb type shared across all three years.
The 1982 Subaru GLF takes a type 67 bulb, an ANSI-standard single-filament unit with a BA15s bayonet base rated at 12V and 8W.
The BA15s bayonet base on the type 67 is a single-contact fitting, meaning it is not interchangeable with dual-contact BA15d bases despite sharing the same physical locking style.
The type 67 is regarded as a lower-wattage variant of the 1156 bulb, which means the two share a base type but differ in wattage output and are not direct substitutes for one another.
The 1981 GLF uses a type 257 bulb, an ANSI-standard unit rated at 12V and 2W, fitted with either a festoon or BA9s base.
The dual base notation on the type 257 reflects that the bulb exists in two physical formats, and the correct format for a given socket depends on the socket design rather than the bulb number alone.
The 1980 GLF takes a type 57 bulb, an ANSI-standard single-filament unit with a BA9s base rated at 12V and 1W.
The type 57 and type 257 both use the BA9s base format, yet their wattage ratings differ at 1W and 2W respectively, making them non-interchangeable despite the shared base type.
All three bulb types conform to ANSI standards applicable in both the United States and Canada.
The wattage values across the three model years range considerably, from 1W on the type 57 to 8W on the type 67, reflecting meaningfully different light output levels between model years.