Hyundai XG350 front and rear side marker bulbs use a 168 size bulb for replacement applications. The replacement chart covers 2002 to 2005 vehicle 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 168 bulb is the sole bulb type specified for the Hyundai XG350 across all side marker positions, covering both front and rear applications for the 2002-2005 model years.
The 168 is classified as a miniature wedge bulb under the T10 designation, which refers to its tubular glass envelope measuring 10 eighths of an inch in width.
The T10 wedge base design means the bulb is held in its socket by the tension of the base contacts alone, with no separate metal base or bayonet pins involved in retention.
The 168 operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of marker and clearance lighting rather than primary illumination functions.
The 168 carries ANSI standardization recognized in both the United States and Canada, meaning the specification conforms to a shared North American standard rather than a manufacturer-specific designation.
Because the front and rear side marker positions on the XG350 share the same 168 bulb size across all four model years, a single bulb type serves all four socket locations on the vehicle.
The T10 wedge form factor is shared by several ANSI-coded bulbs, including the 194 and 147, which differ in wattage and are not direct substitutes for the 168 despite physical similarities in base design.