The Toyota Supra brake light utilizes 1157 and 7443 bulb sizes for the rear lighting system components. Data provided covers the time range from 1986 through 1998 for the specified vehicle.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1157 is the most widely used brake bulb across the Toyota Supra specifications, covering the standard brake light position from 1986-1996 and the outer brake position through 1995. It is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21W high filament and 5W low filament, conforming to ANSI standards for the US and Canada.
The 7443 is a dual-filament wedge bulb in the T20 form factor, also rated at 12V, 21W/5W, and ANSI-standardized for the US and Canada. Despite sharing the same wattage rating as the 1157, its wedge-style base makes it physically incompatible with the BAY15d socket used by the 1157.
The 1156 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W. Unlike the 1157 and 7443, it carries only one filament, which means it serves a dedicated on/off function rather than a combined brake-and-tail role.
The Toyota Supra (1997-1998) uses the 7443 for the standard brake light position, representing a base change from the 1157 used in prior model years. The two bulb types are not interchangeable due to their differing base designs.
The outer brake light position on the 1996 Supra reflects a mid-year transition: the 1157 applies to production through July 1996, while the 7443 applies from July 1996 onward. Installing the wrong type for a given production date would result in a base mismatch.
The Center High Mount Stop Light specifications cover 1987-1993 and exclusively use the 1156. Because the 1156 has a BA15s single-contact base while the 1157 uses a BAY15d dual-contact base, the two are not interchangeable despite sharing a similar physical appearance.
The outer brake light data for the 1998 Supra carries a "To 08/1998" notation, indicating the 7443 specification applies only through August 1998 of that model year.