For the 2007 Kia Rio, both the low-beam and high-beam headlights use a 9003 bulb. The supplied fitment data does not indicate a separate bulb for different headlight types or configurations, so verify the existing bulb and socket before ordering.
The optional fog lights use 881 bulbs. Front and rear turn signals use 1156A, while the brake and tail lights use 1157R. The reverse lights and center high-mounted stop light both use 921 bulbs.
For smaller exterior lighting, the front side marker uses 168NA. Parking-light and license-plate applications may use either 168 or 917, so check the bulb currently installed. Interior fitment includes a DE3175 dome light, 194 or 7441 map-light options, and a 6418 trunk light.