Mazda B2300 License Plate Bulb Size

The Mazda B2300 license plate light uses 194 and 168 bulb sizes for the exterior illumination of the rear registration area. Data for the specified components covers the period from 1994 through 2009.

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
2006-2009	194
2003-2005	168
2001-2002	194
1994-1997	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168

Other Locations

Additional Notes

The Mazda B2300 license plate bulb specifications cover model years 1994-2009, with two distinct bulb sizes appearing across that range: the 194 and the 168.
The 194 bulb is the more widely used of the two, fitting the B2300 for model years 1994-1997, 2001-2002, and 2006-2009.
The 168 bulb applies to the 2003-2005 model years, representing a period where the license plate housing required a slightly higher wattage lamp.
Both the 194 and 168 are ANSI-standardized miniature wedge bulbs of the T10 form factor, meaning they share the same physical wedge-style base configuration.
Despite sharing the T10 wedge base, the 194 operates at 3.78W while the 168 operates at 4.9W, a difference that makes them non-interchangeable even though their bases are physically similar.
Both bulb types are rated at 12V, consistent with standard automotive electrical systems.
The wattage difference between the 194 and 168 means that substituting one for the other risks either insufficient illumination or excess current draw at the license plate socket.
The ANSI designation for both bulbs confirms they conform to a shared North American standardization framework covering the US and Canada.