When doing replacement or upgrading on 2015 – 2017 Kia K900 with headlamps HID, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 2015 – 2017 D3S
High Beam Headlight 2015 – 2017 9005
Back Up Light 2015 – 2017 921
Glove Box 2015 – 2017 6418
Trunk 2015 – 2017 DE3423