The Kia Spectra5 front and rear side marker bulbs both utilize a 168 size bulb for proper illumination. The replacement chart covers 2007 through 2009 model 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 168 bulb is the sole bulb type listed across all side marker positions on the Kia Spectra5 for the 2007-2009 model years.
The 168 is a miniature wedge bulb, classified under the T10 form factor, which refers to its tubular shape with a wedge-style base that requires no separate socket pins.
It operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of marker and courtesy lighting applications.
The 168 carries ANSI standardization recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical tolerances shared across manufacturers.
The same 168 bulb size is specified for both the front and rear side marker positions on the Kia Spectra5, indicating no distinction between the two locations in terms of bulb requirements.
The T10 wedge base format is a widely used standard, and multiple bulb numbers share this base type, though not all T10-based bulbs carry identical wattage or voltage ratings to the 168.
Because wattage and voltage ratings vary among T10-compatible bulbs, substitutions with other T10 bulbs of differing electrical ratings may not conform to the original specification.