Buick Rainier Dome Light Bulb Size

The Buick Rainier dome light requires a 212-2 bulb size for proper installation and function within the interior lighting system. Data for the specified component covers the 2004 to 2007 range.

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
2004-2007	212-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	212-2

Other Locations

Additional Notes

The Buick Rainier uses the 212-2 bulb for the dome light across all documented model years, spanning 2004-2007.
The 212-2 is an ANSI-standardized bulb, meaning it conforms to a defined specification recognized across the United States and Canada.
This bulb is a festoon type, which is a cylindrical lamp that mounts by pressing its two end caps into spring clips rather than threading or plugging into a socket.
The 212-2 has a length of 41mm, a figure that determines physical fit within the dome light housing.
It uses an SV8.5 base, a designation that refers to the end-cap style and spacing specific to festoon bulbs of this size class.
The bulb operates at 12 volts and 12 watts, consistent with standard automotive electrical systems.
When replacing the dome light bulb in the Buick Rainier (2004-2007), fitment depends on both the 41mm length and the SV8.5 base type, as festoon bulbs of different lengths or base styles are not interchangeable even if they share a similar appearance.