The Oldsmobile Toronado brake light uses 1157, 1141, P21W, and 2057 bulb sizes depending on the specific production version. Available data for the specified vehicle components covers the range from 1966 through 1992.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The brake light specifications for the Oldsmobile Toronado span model years 1966 through 1992, covering both standard brake lights and, for later years, the center high mount stop light.
The 1157 bulb is the most frequently specified brake bulb across the Toronado's production run, appearing in the 1966-1973, 1976, and 1979-1984 model years. It is a dual-filament ANSI-standard bulb rated at 12V with a 21W high filament and 5W low filament, mounted on a BAY15d bayonet base.
The 2057 bulb shares the same BAY15d bayonet base as the 1157 and is also a dual-filament ANSI-standard type, but operates at a higher wattage of 26.9W on its bright filament. It is specified for the standard brake light position on the Toronado from 1986 and again from 1988 through 1992.
Because the 2057 and 1157 share the BAY15d bayonet base, they are physically interchangeable in terms of socket fitment, though their filament wattages differ. Substituting one for the other may affect light output intensity.
The P21W is an ECE-standard single-filament bulb rated at 12V and 21W, using a BA15s bayonet base. It is specified for the Toronado's standard brake light in 1974 and 1987, making it the only non-ANSI bulb type in these specifications.
The 1141 bulb is an ANSI-standard single-filament type with a BA15s base, rated at 12V and 21W. It appears in the brake light position for the 1975, 1977, and 1978 model years.
Although the 1141 and P21W share the same BA15s base and operate at the same 12V/21W rating, one follows the ANSI standard and the other the ECE standard. Physical fitment in the socket would be the same, but the two bulbs originate from different regulatory frameworks.
The 1156 bulb is specified exclusively for the center high mount stop light (CHMSL) position, appearing on the 1986-1992 Toronado in that role. It is an ANSI-standard single-filament bulb with a BA15s base, rated at 12V and 21W.
The 1987 Toronado is notable in that it uses a P21W for the standard brake light and a 2057 for the center high mount stop light, making it the only model year in these specifications where those two specific bulb types appear together across the two positions.
The center high mount stop light position, which uses single-filament bulbs throughout its listed years, reflects the function of that lamp as a dedicated stop signal with no secondary running-light filament requirement, unlike the dual-filament bulbs used in the standard brake light positions for many of the same years.