Honda Civic front and rear side marker bulbs utilize 168 or 67 bulb sizes depending on the specific model variant. The replacement chart covers vehicle production spanning 1973 to 1991 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 Honda Civic uses two distinct bulb types across its side marker positions: the 168 and the 67, both of which conform to ANSI standards recognized in the United States and Canada.
The 168 bulb is a T10 miniature wedge type rated at 12V and 4.9W. Its wedge base means it is held in place by the socket itself rather than by a locking pin or bayonet mechanism.
The 67 bulb is a single-filament type with a BA15s bayonet base, rated at 12V and 8W. The BA15s base requires an alignment-and-twist installation, which is physically incompatible with the wedge sockets used by the 168.
Because the 168 and 67 use fundamentally different base types, they are not interchangeable, even though both operate on 12V circuits.
The Honda Civic (1980-1991) takes the 168 bulb in both the front and rear side marker positions.
Model years 1973-1979 use the 67 bulb in both front and rear side marker positions, reflecting a different socket design from later generations.
The front and rear side marker positions share the same bulb specification within any given model year, meaning a single bulb type services all four side marker locations on those vehicles.
The 67 bulb is described as a lower wattage variant of the 1156. At 8W, it draws noticeably more power than the 4.9W 168 used in later Civic model years.
The 1984 and 1985 model years are absent from the specifications for both front and rear side marker positions on the Honda Civic.