The Hyundai Scoupe front turn signal bulb size measures 2357NA or 1157, while the rear turn signal bulb size measures 1156. The replacement chart contains vehicle production years and bulb size specifications covering 1991 to 1995.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Hyundai Scoupe rear turn signal uses the 1156 bulb across all model years covered in the specifications, from 1991-1995, making it the most consistent fitment in this dataset.
The 1156 is a single-filament bulb rated at 12V and 21W, built to ANSI standards for the US and Canadian markets. It uses a BA15s bayonet base, which has a single contact pin on the base collar.
The front turn signal specification for the Hyundai Scoupe changed between the 1992 and 1993 model years, shifting from the 1157 to the 2357NA bulb.
The 2357NA, used in the 1993-1995 front turn signal position, is a dual-filament bulb rated at 12V with a high filament draw of 26.9W and a low filament draw of 8W. Its natural amber glass produces a yellow-tinted output without requiring an amber-colored lens or socket.
The 1157, used in the 1991-1992 front turn signal position, is also a dual-filament bulb rated at 12V, but with filament ratings of 21W and 5W. It shares the BAY15d bayonet base with the 2357NA, which features two offset contact pins to prevent incorrect installation.
Although the 1157 and 2357NA share the same BAY15d base type and are physically interchangeable in terms of socket fit, their wattage ratings differ. Substituting one for the other affects light output and may affect turn signal flash rate, as most flasher relays are load-sensitive.
The 2357NA and 1157 are not equivalent to the 1156 in base type. The 1156 uses a BA15s single-pin base, while the other two use a BAY15d dual-pin base, making cross-position substitution between front and rear sockets physically incompatible.
All three bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada.