Mazda MPV Dome Light Bulb Size

The Mazda MPV dome light requires bulb sizes DE3175, 906, or 168 depending on the specific version of the vehicle. Available data covers the range from 1989 to 2006.

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
2000-2006	DE3175
1996-1998	DE3175
1995	906
1994	DE3175
1993	906
1991-1992	DE3175
1989-1990	168

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Mazda MPV dome light bulb specifications span model years 1989 through 2006, with three distinct bulb types represented across that range: DE3175, 906, and 168.
The DE3175 is the most frequently specified bulb in the Mazda MPV dome light application, covering model years 1989-1992, 1994, 1996-2006, with the exception of 1993 and 1995.
The DE3175 is a festoon-type bulb with a 31mm length and end-cap contacts, operating at 12 volts. Festoon bulbs make contact at both ends of the housing rather than through a base socket, which is a distinct physical configuration from wedge-type bulbs.
The 906 and 168 bulbs are both T10 miniature wedge types operating at 12 volts, meaning they share the same base form factor. However, they differ in wattage: the 906 is rated at 8W while the 168 is rated at 4.9W.
Despite the shared T10 wedge base between the 906 and 168, the wattage difference means they are not electrically equivalent and are not interchangeable without affecting light output.
The 906 bulb is specified for the Mazda MPV in 1993 and 1995, while the 168 bulb applies to 1989 and 1990. These wedge-type years are not interchangeable with DE3175 years, as the festoon and wedge formats require different socket types.
All three bulb types in these specifications conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances across the domestic market.
The DE3175 designation follows the ANSI festoon naming convention, where "DE" denotes a double-ended festoon configuration and "31" refers to the 31mm length of the bulb body.
The model year 1991-1992 and 1994 entries specify the DE3175, placing them in the same fitment category as the 1996-2006 range despite the gap introduced by the 1993 and 1995 906 entries.
Because the three bulb types represent two fundamentally different socket configurations, festoon and wedge, a replacement bulb must match not only the size designation but also the socket type present in the vehicle for that specific model year.