Honda HR-V front side marker uses 168 bulb size while rear side marker requires 7440NA bulb size. The replacement bulb size chart covers 2016 through 2022 production years.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Honda HR-V front side marker position uses the 168 bulb across the 2016-2020 model years.
The 168 is a T10 miniature wedge bulb rated at 12V and 4.9W, conforming to ANSI standards for the US and Canadian markets.
The rear side marker position on the Honda HR-V uses the 7440NA bulb, a single-filament T20 wedge type rated at 12V and 21W with natural amber glass.
The 7440NA's natural amber glass produces the amber color required for side marker functions without relying on a tinted lens or colored housing.
The front and rear side marker positions on the HR-V are not interchangeable, as they use bulbs from different size families with a significant wattage difference of 4.9W versus 21W.
The T10 and T20 designations refer to the bulb's tubular envelope width in units of one-eighth of an inch, making the T20 noticeably larger in physical size than the T10.
Both the 168 and 7440NA conform to ANSI standards applicable in the US and Canada, meaning fitment is governed by those regional specifications rather than global equivalents.
The single-filament construction of the 7440NA distinguishes it from dual-filament wedge bulbs in the same family, and substituting a dual-filament variant would not be a direct replacement for this application.