Honda Insight front side marker bulbs use 168 size while rear side marker bulbs use 194 or 7443 size. The replacement chart covers vehicle production years spanning 2000 to 2014.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda Insight uses three distinct bulb types across its side marker positions: the 168, 194, and 7443, all of which conform to ANSI standards recognized in the United States and Canada.
The 168 bulb is a single-filament miniature wedge type in the T10 form factor, rated at 12V and 4.9W, and it serves as the front side marker bulb across all model years listed in the specifications, spanning 2000-2006 and 2010-2014.
The 194 bulb shares the same T10 wedge form factor as the 168 but draws less power at 3.78W, and it is specified for the rear side marker position on the Honda Insight for model years 2010-2014.
Although the 168 and 194 bulbs share the T10 wedge base, their wattage ratings differ, which is a relevant fitment consideration when substituting one for the other.
The 7443 is a dual-filament wedge bulb in the larger T20 form factor, rated at 12V with a 21W high filament and a 5W low filament, and it is specified for the rear side marker position on the Honda Insight for model years 2000-2006.
The T20 form factor of the 7443 is physically distinct from the T10 form factor used by the 168 and 194 bulbs, making these types non-interchangeable with one another.
The rear side marker specification for the Honda Insight changed between the 2006 and 2010 model years, shifting from the dual-filament 7443 to the single-filament 194.
The dual-filament design of the 7443 means it is capable of operating at two brightness levels, a characteristic not shared by the single-filament 168 or 194 bulbs used elsewhere in the Insight's side marker system.