Honda Civic front turn signal bulbs utilize 7440NA, 3497, and 1156 sizes, while rear turn signal bulbs use 1156 and 2057 sizes across different model generations. The replacement chart covers 1973 through 2024 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 1156 bulb is the most frequently specified size across the Honda Civic's front and rear turn signal positions, appearing in front applications for 1986-1989 and in rear applications for 1978-1983 and 1986-1991.
The 2057 bulb is a dual-filament type rated at 12V with a high-beam draw of 26.9W and a low-beam draw of 8W, making it distinct from the single-filament bulbs used elsewhere in these specifications.
The 2057 uses a BAY15d bayonet base, which has offset pins to prevent incorrect insertion, whereas the 1156 and 3497 use a BA15s bayonet base with a single contact and symmetrical pin placement.
Because the 2057 and 1156 use different bayonet base types, BAY15d and BA15s respectively, they are not interchangeable despite both being 12V bulbs.
The 3497 is a variant of the 1156 and shares the same BA15s bayonet base and 12V, 21W electrical rating, though the two carry distinct ANSI designations.
The 2024 Honda Civic front turn signal uses the 7440NA, a T20 wedge-base bulb with natural amber glass, which produces the amber color through the glass itself rather than through a colored lens or housing.
The 7440NA is a single-filament wedge bulb and is not pin-compatible with any of the bayonet-base bulbs specified for earlier Civic model years.
The rear turn signal for the 1973-1977 Honda Civic uses the dual-filament 2057, while the front turn signal for those same years also uses the 2057, making the front and rear specifications identical for that period.
From 1986-1989, the Honda Civic front turn signal uses the 1156, and the rear turn signal for 1986-1991 also uses the 1156, indicating a shared single-filament specification across both positions during that span.
All four bulb types listed in these specifications conform to ANSI standards applicable in both the United States and Canada.