LED Fog Lights Kia Optima K5 2016-2018

Kia Optima K5 LED fog lights: the complete unit, not just the bulb

This LED fog light is a complete unit: the lens, reflector, and light source form a single assembly that replaces the original fog light in the front bumper. It is available for the Kia Optima K5 models from 2016 to 2018, in your choice of driver side, passenger side, or as a pair. You are not changing a bulb in a yellowed housing: you are replacing the entire assembly.

Why replace the unit rather than the light source

On a sedan approaching ten years old, the problem is almost never the light source alone. It is the lens that becomes clouded, the reflector that loses its silvering, and the seal that lets in moisture—hence the persistent condensation inside the unit. Changing only the light source in a worn housing restores neither the beam pattern nor the cut-off. Replacing the complete fog light unit starts with a new lens and a new seal.

Choosing the correct side

• Driver side (left) — one unit, for left-hand drive vehicles in France.
• Passenger side (right) — one unit, curb side.
• Left + right pair — two units, the logical solution if both lenses are the same age.
• Clear light color — advertised as white by the supplier.
• 12 V / 24 V power supply — according to the supplier's specifications.

A piece of advice that applies to all lighting: if you replace only one side, the difference in color and intensity with the remaining lens will be noticeable. The pair avoids the "black eye" effect.

Technical specifications of the fog light unit

Complete assembly of lens + LED light source, designed to fit into the original location in the Optima K5 front bumper. Advertised voltage: 12 V / 24 V, color: clear. Supplier model reference: WuD-QiY-G6138. Supplier's target vehicle version: 2.0 L. Each package contains one unit, except for the pair option, which contains two.

Installation and approval: read this before ordering

Installation is done through the wheel arch access or the bumper panel, depending on the version, by unclipping the trim and then disconnecting the wiring harness. Allow thirty minutes per side. Essential point: an aftermarket lighting unit can only be used on public roads if it bears a visible European approval marking on the lens. No E marking is claimed for this item: check the part upon receipt, as non-approved lighting or an improperly cut-off beam will result in a failed technical inspection re-test and can dazzle other road users. Have the beam height adjusted after installation.

Frequently asked questions about fog lights

When should front fog lights be used?
In fog, heavy rain, or snowfall. They are prohibited in clear weather, both day and night.

Why does my fog light fog up?
The housing's waterproof seal has deteriorated. Condensation eventually damages the reflector: it is time to replace the unit.

Should both sides be replaced at the same time?
It is not mandatory, but highly recommended to maintain two beams of the same color and intensity.

Does an LED run cooler than a halogen bulb?
The light source runs cooler on the surface, but its heat sink must remain unobstructed. Never seal the back of the unit.

Will this unit fit an Optima from a different year?
The bumper cutout has changed over successive facelifts. Compare the shape of your lens with the photos before ordering.

Restore a sharp beam and a clean front end: choose your side or the pair and order now.

Type: Complete LED fog light unit (lens + light source)
Compatible vehicle: Kia Optima K5, 2.0 L version — depending on the bumper, to be verified
Years: 2016 to 2018
Options: Driver side, passenger side, or pair
Packaging: 1 unit, or 2 units for the pair option
Voltage: 12 V / 24 V
Color: Clear
Supplier reference: WuD-QiY-G6138
Location: Front bumper, original housing
Approval: No E marking claimed — to be checked before use on public roads
Condition: 100% New