Mazda B2300 License Plate Bulb Size

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.