Saturn LW200 Map Light Bulb Size

The Saturn LW200 map light requires a 12961 bulb size for proper installation within the interior lighting housing. Data for the specific component covers the period from 2001 through 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	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Saturn LW200 uses the 12961 bulb for the map light across the 2001-2003 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor with a W2.1x9.5d base.
The T10 designation refers to a tubular bulb approximately 10mm wide, commonly found in low-current interior lighting applications such as map lights and courtesy lights.
The W2.1x9.5d base is a wedge-type base, meaning the bulb is held in its socket by the tension of the glass envelope itself rather than by a separate metal cap or pins.
The 12961 operates at 12 volts and 5 watts, which is consistent with standard low-power interior vehicle lighting.
Because the 12961 uses a wedge base, it is not interchangeable with bulbs that use bayonet or festoon bases, even if the voltage and wattage ratings are similar.