Oldsmobile Starfire Dome Light Bulb Size

The Oldsmobile Starfire dome light utilizes bulb sizes 561, 562, 1004, and 211-2 across various production periods. Available data covers the range from 1954 through 1980.

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
1976-1980	561
1975	562
1966	1004
1965	211-2
1961-1964	1004
1954-1957	1004

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	562
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1004
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2

Other Locations

Additional Notes

The 1004 bulb is the most frequently specified dome light bulb for the Oldsmobile Starfire, covering the 1954-1957 and 1961-1964 model years, as well as 1966.
The 1004 is a dual-filament bulb rated at 12V and 21/5W, fitted with a BAY15d bayonet base, and is classified as a variant of the more widely known 1157 bulb.
The BAY15d bayonet base on the 1004 features offset pins, which prevents incorrect installation in a single-filament socket and makes it non-interchangeable with single-filament bayonet bulbs.
The 561 bulb is specified for the 1976-1980 Starfire dome light, making it the sole festoon type used across five consecutive model years in that generation.
The 561 is a festoon bulb with a 44mm length and end-cap contacts, rated at 12V and 12W under the ANSI standard for the US and Canadian markets.
The 562 bulb, specified for the 1975 Starfire, shares the same 44mm festoon form factor and 12V/12W rating as the 561, though the two carry distinct ANSI designations and are not confirmed as interchangeable.
The 211-2, specified for the 1965 Starfire, is a festoon bulb rated at 12V and 12W but with a 41mm length and an SV8.5 base, making it physically distinct from both the 561 and 562 despite the identical wattage rating.
The SV8.5 base on the 211-2 is a specific festoon socket standard, and its 41mm length means it cannot serve as a direct substitute in fixtures designed for the 44mm 561 or 562 bulbs.
All four bulb types across the Starfire dome light specifications conform to ANSI standards applicable to the US and Canadian markets.
The shift from the 1004 bayonet bulb used through 1966 to festoon-type bulbs beginning in 1975 reflects a change in dome light socket design between those generations of the Starfire.