For the 2014 Kia Optima, headlight bulb fitment varies by trim and headlight configuration. The EX Luxury uses an H11B low beam and H1 high beam. The Hybrid EX Premium uses H7 bulbs for both high and low beams when equipped with halogen headlights. The Limited uses a D1S low beam, while the LX uses an H11 low beam. Confirm the trim and headlight type before ordering, especially for the Hybrid.
Other notable fitment differences include LED fog lights, center stop light, and standard tail/brake lighting on listed applications. The EX Luxury uses a 2357R for the brake and tail lights, plus a 2357A for the front parking light. Front turn signals use 2357A, and reverse lights use 921.
License plate lighting may use either 168 or 917 bulbs. Front and rear side markers are listed as either 168NA or LED, so compare the original bulb before replacement. Rear turn signals may use 1156 or 1156A. Interior applications include 6461 for the dome light, 6418 for the glove box, trunk, and vanity lights, and either 194 or 7441 for map lights.