The Mazda Millenia brake light utilizes 1157 and 7443 bulb sizes for the rear lighting system. Provided information covers the production span from 1995 through 2002.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mazda Millenia brake light specifications cover the 1995-2002 model years across three sub-parts: the standard brake light, the Center High Mount Stop Light (CHMSL), and the Inner Brake light.
The 7443 and 1157 are the two bulb types specified for the standard brake position. Both are dual-filament bulbs rated at 12V with a 21W/5W output, meaning one filament handles the running light function and the other handles the braking function.
The 1157 uses a BAY15d bayonet base, while the 7443 uses a T20 wedge base. These two base types are physically incompatible, so the 1157 and 7443 are not interchangeable despite sharing the same wattage ratings.
The Mazda Millenia (2001-2002) uses the 7443 for the standard brake light, replacing the 1157 found in the 1995-2000 model years. This represents a base-type change that requires attention when sourcing a replacement.
The CHMSL specification for the 1998 Mazda Millenia calls for the 921, a T15 wedge bulb rated at 12V and 16W. This differs from the 1156 used in all other model years for that same position.
The 1156 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W. Its single-filament design distinguishes it from the similarly based 1157, which has two filaments and is not a direct substitute in a single-filament socket.
The 168 is a miniature T10 wedge bulb rated at 12V and 4.9W. Its significantly lower wattage compared to the other bulbs in these specifications reflects its use in the CHMSL of the 2001-2002 models, where output demands differ from a standard brake position.
The Inner Brake sub-part applies only to the 1999-2000 model years, both of which use the 1157 dual-filament BAY15d bulb.
All five bulb types listed across these specifications conform to ANSI standards applicable in the United States and Canada, indicating standardized sizing and electrical ratings within those markets.
The CHMSL position on the Mazda Millenia uses three different bulb types across the full 1995-2002 production span, specifically the 1156, 921, and 168, making it the position with the greatest variation in bulb specification across model years.