Saturn LW300 Dome Light Bulb Size

The Saturn LW300 dome light requires a bulb with the unique size 561 for proper installation. Data for the specified lighting component covers the range from 2001 to 2003.

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
2001-2003	561

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 44mm length, end-cap contacts. 12V, 12W.	561

Other Locations

Additional Notes

The 561 bulb is the sole dome light bulb size listed for the Saturn LW300 across the 2001-2003 model years.
The 561 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket.
Festoon bulbs are held in place by spring-loaded clips that press against the end caps, a mounting method common in interior dome and map light applications.
The 561 has a rated length of 44mm, which is the span between its two end contacts and determines physical fitment within the lamp housing.
It operates at 12 volts and 12 watts, values consistent with standard automotive low-voltage interior lighting circuits.
The 561 carries ANSI designation, indicating it conforms to a standardized specification recognized in both the United States and Canada.
Because festoon bulbs are available in multiple lengths, substituting a bulb of a different length risks poor contact with the spring clips or an improper fit within the housing, even if the voltage and wattage ratings match.