The Toyota Celica brake light utilizes 7443 and 1157 bulb sizes for the specific lighting components located at the rear of the vehicle. Available data covers the range from 1971 to 2002 for the specified automotive lighting application.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1157 bulb is the most widely used brake bulb size across the Toyota Celica's brake lighting specifications, appearing across the standard brake position from 1971-1999, which represents the majority of model years covered in the data.
The 1157 is a dual-filament bulb operating at 12V with a 21W/5W output and a BAY15d bayonet base, where the two filaments serve separate functions, typically one for running light duty and one for braking intensity.
The 7443 is also a dual-filament bulb with a 21W/5W rating at 12V, but it uses a T20 wedge base rather than a bayonet mount, making it physically incompatible with sockets designed for the 1157 despite sharing the same wattage output.
The Toyota Celica (2000-2002) shifted the standard brake and outer brake positions from the 1157 to the 7443, meaning these two bulb types are not interchangeable even though their electrical ratings are identical.
The center high mount stop light on the Celica used the 921 for 1994-1999, a single-filament T15 wedge bulb rated at 12V and 16W, which is a lower wattage than the brake bulbs used in the other positions.
The 1156 bulb, specified for the center high mount stop light on 1987-1993 models, is a single-filament bulb with a BA15s bayonet base rated at 12V and 21W. Its BA15s base differs from the BAY15d base of the 1157, and the two are not interchangeable despite a similar physical appearance.
The center high mount stop light transitioned from the 1156 to the 921 between the 1993 and 1994 model years, representing a change in both base type and wattage for that specific position.
All four bulb types listed across these specifications conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances within those markets.