For the 2016 Kia Rio, high-beam fitment is listed as H1 or 9003. Low-beam options include 9003; hatchback models with projector-type headlights use H11B, while hatchbacks without projector-type headlights use H7. Confirm the headlight style and compare the existing bulb before ordering.
Other fitment differences depend on body style, trim, and the original lamp assembly. Front turn signals may use 2357A or 7507, so compare the original bulb. The reverse light uses 921. Brake-light fitment is LED for hatchbacks with projector-type headlights or 1157R for hatchbacks without them. The center stop light may be 921 or LED.
Additional listed bulbs include 7507 for the rear turn signal, 6461 for the dome light, 6418 for the glove-box and trunk lights, and 168NA for the front side marker.