2018 Kia K900 Bulb Size

Misconception: that one bulb size fits every car, or that all halogen and LED replacements are interchangeable. It seems simpler that way, and many online listings encourage that mental model. Why it feels true, and what is true: the 2018 Kia K900 actually uses different bulb types for low beam, high beam, turn signals, and interior lights. Think of it as a parts map — sockets, wattage, and beam patterns vary. A rule of thumb is to match the bulb code printed in your owner’s manual or on the existing bulb. Implications and quick recap: using the right size helps beam alignment, visibility, and longevity. Quick tests are checking the owner’s manual, comparing part codes, and testing fit before sealing the housing. This page includes affiliate links; if you purchase through them I may earn a small commission at no extra cost to you.