The Toyota Supra tail light utilizes 1157 and 7443 bulb sizes for the rear lighting components across various production versions. Available data covers the specific range from 1986 through 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1157 bulb is an ANSI-standard dual-filament type rated at 12V with a 21W/5W output and uses a BAY15d bayonet base. The two wattage ratings correspond to its stop/tail function, where the higher filament activates under braking and the lower filament remains lit as a running light.
The 7443 bulb is also an ANSI-standard dual-filament type sharing the same 12V, 21W/5W electrical rating as the 1157, but it uses a T20 wedge base rather than a bayonet mount. These two base styles are physically incompatible despite their identical wattage ratings.
The Toyota Supra transitioned from the 1157 to the 7443 bulb type in the outer tail light position during the 1996 model year, with the changeover occurring in July 1996. Units produced before that date use the 1157, while those produced from that date onward use the 7443.
The mid-year base change in 1996 means that two Supra vehicles of the same model year may require different outer tail light bulbs depending on their production date, making production date verification necessary before sourcing a replacement.
The 1157 bulb with its BAY15d bayonet base was the outer tail light fitment for the Toyota Supra across the 1986-1995 model years, as well as for 1996 vehicles produced before July of that year.
The 7443 wedge-base bulb applies to the outer tail light for the 1997-1998 model years, in addition to 1996 vehicles produced from July 1996 onward. The 1998 fitment carries a further cutoff of August 1998.
Both the 1157 and 7443 bulb types are recognized under ANSI standards and are specified for the US and Canadian markets, indicating these fitments reflect North American-market vehicles.