Ford EXP front turn signal bulbs use 2357 or 1157 bulb sizes, while rear turn signal bulbs use 2357, 1156, or 1157 sizes. The replacement chart covers 1982 through 1988 vehicle production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford EXP front turn signal uses the 2357 bulb for 1986-1988 and the 1157 bulb for 1982-1985.
The 2357 and 1157 are both dual-filament bulbs sharing the BAY15d bayonet base, operating at 12V. The 2357 draws 26.9W on its high filament and 8W on its low filament, while the 1157 draws 21W and 5W respectively.
The rear turn signal on the Ford EXP uses the 2357 for 1987-1988, the 1157 for 1983 and 1985, and the 1156 for 1984 and 1986.
The 1156 is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W. Its base type differs from the BAY15d base found on the 1157 and 2357, making these bulbs physically non-interchangeable despite their similar appearance.
Because the rear turn signal position alternates between the 1156 and 1157 across certain model years, the base type varies by year in that position, and substituting one for the other is not a direct fit.
The 2357 is a brighter variant of the 1157 and shares the same BAY15d base, which means the two are physically interchangeable in the socket, though their wattage output differs.
The front turn signal position uses only dual-filament bulbs across all listed years, while the rear turn signal position uses both single-filament and dual-filament types depending on the model year.