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, Interior Door Light Bulb
Used for: License Plate Light Bulb, Interior Door Light Bulb
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
Used for: Side Marker Light Bulb Front, Side Marker Light Bulb Rear
Used for: Turn Signal Light Bulb Rear
Used for: Dome Light Bulb
Used for: Map Light Bulb(Compare to original - Option 1)
Used for: Map Light Bulb(Compare to original - Option 2)
Used for: Trunk or Cargo Area Light
This page for the 2005 Kia Optima helps you verify bulb sizes by lighting position, so you can match the correct replacement before you buy. Use it as a quick reference for exterior and interior lights, including brake, tail, turn signal, parking, reverse, license plate, dome, map, and cargo-area bulbs.
Because trim and lighting equipment can vary by market and body style, the bulb listed for one position may not be the only possible fit. Checking the exact lamp location on your car is the best way to confirm the right bulb size for your 2005 Optima.
For the best fitment, compare the bulb in your car with the listing on this page before ordering, especially if your Optima has a different trim package, regional lighting setup, or an aftermarket housing. Halogen bulbs and LED replacements can look similar in size but may not behave the same, and some LED conversions require extra attention to polarity, beam pattern, or load resistors. If you are upgrading from factory halogen to LED, make sure the replacement is compatible with the socket and the housing design. When possible, remove the installed bulb and match the base and markings directly before purchase.
The brake light bulb listed for the 2005 Kia Optima is 2357R.
The tail light bulb listed for the 2005 Kia Optima is 2357R.
The front turn signal light bulb listed is 2357A.
The rear turn signal light bulb listed is 1156A.
The parking light bulb listed for this model year is 2357A.
The back up reverse light bulb listed is 921.
The center high mount stop light bulb listed is 921.
The license plate light bulb may be 168 or 917, depending on the exact setup.
The dome light bulb listed is 6461.
The trunk or cargo area light bulb listed is 6418.
The map light bulb options listed are 64111 for one original-fit comparison and 64113 for the other original-fit comparison.
Yes. Trim level, lighting package, market, and body style can affect the exact bulb used in a given position.
Yes. Checking the installed bulb is the safest way to confirm fitment, especially if your car has been modified or uses a different regional lighting package.
Yes, but you should confirm compatibility first. LED replacements may need the correct socket fit, polarity, and sometimes additional hardware for proper operation.
