Mazda 6 Map Light Bulb Size

The Mazda 6 map light requires a DE3175 or 12961 bulb size for proper illumination. The replacement chart covers vehicle production spanning 2003 to 2020 with corresponding bulb specifications.

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
2019-2020	DE3175
2009-2017	DE3175
2006-2008	12961
2003-2004	12961

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Mazda 6 map light uses two distinct bulb types across its model years: the DE3175 festoon bulb and the 12961 miniature wedge bulb.
The DE3175 is an ANSI-standardized festoon bulb rated at 12V, measuring 31mm in length with end-cap contacts. Its ANSI designation means it conforms to a defined standard recognized across the United States and Canada.
The 12961 is a Philips part number referencing a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. The wedge base design means the bulb is held in place by friction rather than a separate socket lock.
The DE3175 festoon and the 12961 wedge bulb use fundamentally different base types and are not interchangeable with each other.
The Mazda 6 (2009-2020) uses the DE3175 festoon bulb for the map light position.
Model years 2003-2004 and 2006-2008 of the Mazda 6 use the 12961 wedge bulb for the map light position.
Both bulb types share a 12V operating voltage, which reflects the standard electrical system voltage common to passenger vehicles.
The DE3175 designation is an ANSI industry code, meaning multiple manufacturers produce bulbs under that same designation, whereas 12961 is specific to Philips nomenclature.