Used for: Headlight Bulb High Beam
Used for: Headlight Bulb Low Beam
Used for: Back Up Reverse Light Bulb, Center High Mount Stop Light Bulb
Used for: Brake Light Bulb, Tail Light Bulb
Used for: License Plate Light Bulb, Courtesy Light Bulb
Used for: License Plate Light Bulb, Courtesy Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front
Used for: Turn Signal Light Bulb Rear
Used for: Dome Light Bulb, Trunk or Cargo Area Light
Used for: Map Light Bulb
Used for: Map Light Bulb
This 2008 Kia Optima bulb size page helps you quickly verify the correct bulb by lighting position, so you can replace the right lamp without guessing. Use it for exterior and interior lights such as the headlights, tail lights, turn signals, license plate lights, map lights, and cargo area light.
Because bulb fitment can vary by trim, body style, and market, it is best to match the bulb to the exact location on your Optima. The chart on this page lists the common bulb sizes for the 2008 Kia Optima and makes it easier to compare the front, rear, and cabin lighting points before you buy.
For the best fit, compare the listed bulb size with the bulb already installed in your car, especially if your Optima has a different lighting package or was built for a specific market. Some owners choose LED replacements for brighter output or longer life, but an LED bulb may need the correct base style, polarity, or load handling to work properly. If you are doing an aftermarket conversion, make sure the bulb type is compatible with the housing and lens design, and always check the installed bulb before ordering to avoid a mismatch.
The low beam headlight bulb listed for the 2008 Kia Optima is H11B.
The high beam headlight bulb listed for the 2008 Kia Optima is H1.
The front turn signal light bulb size listed is 2357A.
The rear turn signal light bulb listed for the 2008 Kia Optima is 2357.
Both the brake light bulb and tail light bulb are listed as 2357R.
The backup reverse light bulb listed for this Optima is 921.
The center high mount stop light bulb listed for the 2008 Kia Optima is 921.
The license plate light bulb sizes listed are 168 and 917.
The map light bulb sizes listed are 194 and 7441.
Both the dome light bulb and the trunk or cargo area light bulb are listed as 6418.
The front side marker light bulb listed is 168NA.
Yes. Trim level, lighting package, body style, and market can affect fitment, so it is smart to confirm the bulb position and compare it with the bulb already installed.
Yes. Checking the installed bulb is one of the best ways to confirm fitment, especially if the car has been modified or if you are unsure whether the lamp has been changed before.
