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Hyundai Ioniq Hybrid 2018 Bulb Size
Bulb size chart
Headlight Bulb High Beam - 9005
Headlight Bulb High Beam and Low Beam - D3S
Headlight Bulb Low Beam - H7
Back Up Reverse Light Bulb - 921
Brake Light Bulb - 7528
License Plate Light Bulb - 168
Parking Light Bulb - 168
Side Marker Light Bulb Front - 168NA
Side Marker Light Bulb Rear - 168NA
Tail Light Bulb - 7528
Turn Signal Light Bulb Front - 2357A
Turn Signal Light Bulb Rear - 1156A
Dome Light Bulb - DE3175
Trunk or Cargo Area Light - 6418
Vanity Mirror Light Bulb - 6418
9005 Bulbs
Used for: Headlight Bulb High Beam
D3S Bulbs
Used for: Headlight Bulb High Beam and Low Beam
H7 Bulbs
Used for: Headlight Bulb Low Beam
921 Bulbs
Used for: Back Up Reverse Light Bulb
7528 Bulbs
Used for: Brake Light Bulb, Tail Light Bulb
168 Bulbs
Used for: License Plate Light Bulb, Parking Light Bulb
168NA Bulbs
Used for: Side Marker Light Bulb Front, Side Marker Light Bulb Rear
2357A Bulbs
Used for: Turn Signal Light Bulb Front
1156A Bulbs
Used for: Turn Signal Light Bulb Rear
DE3175 Bulbs
Used for: Dome Light Bulb
6418 Bulbs
Used for: Trunk or Cargo Area Light, Vanity Mirror Light Bulb
This page helps you verify the bulb sizes for the 2018 Hyundai Ioniq Hybrid by lighting position, so you can match the right bulb to the right socket before you buy. Because trim and lighting equipment can vary, it is a practical reference for checking headlights, tail lights, interior lights, and other exterior lamps on this model.
Use the bulb chart to narrow down the correct fit for each location on the car, whether you are replacing a burned-out bulb or planning a full lighting refresh. The 2018 Ioniq Hybrid may use different bulb types depending on market, body style, and package, so confirming the exact position is the safest way to shop.
Fitment can change between trims and lighting packages, especially if your Ioniq Hybrid has halogen equipment in one market and HID or LED-style components in another. If you are considering aftermarket upgrades or a conversion, make sure the bulb base, connector, and housing are compatible with your vehicle and local regulations. The best practice is to inspect the bulb already installed in your car before ordering, since the same year and model can still use different bulbs depending on factory options.
FAQ
What bulb size does the 2018 Hyundai Ioniq Hybrid use for the low beam headlight?
The listed low beam headlight bulb size is H7 for some configurations. A separate chart entry also shows D3S for headlight high beam and low beam on certain setups, so you should confirm which lighting package your car has before buying.
What is the high beam bulb size for the 2018 Ioniq Hybrid?
The high beam bulb size listed for this model is 9005.
Does the 2018 Hyundai Ioniq Hybrid use the same bulb for brake lights and tail lights?
Yes, the chart lists 7528 for both the brake light bulb and the tail light bulb.
What bulb is used for the front turn signal on this car?
The front turn signal bulb size listed is 2357A.
What bulb is used for the rear turn signal on the 2018 Ioniq Hybrid?
The rear turn signal bulb size listed is 1156A.
What size is the reverse light bulb?
The back up reverse light bulb size listed is 921.
What bulb fits the license plate light?
The license plate light bulb size listed is 168.
What bulb is used for the parking light?
The parking light bulb size listed is 168.
What are the side marker bulb sizes on this model?
Both the front side marker light bulb and rear side marker light bulb are listed as 168NA.
What bulb does the dome light use?
The dome light bulb size listed is DE3175.
What bulb fits the vanity mirror light?
The vanity mirror light bulb size listed is 6418.
What bulb is used for the trunk or cargo area light?
The trunk or cargo area light bulb size listed is 6418.
Why should I check my installed bulb before ordering parts?
Because the 2018 Hyundai Ioniq Hybrid can vary by trim, market, and lighting package, the installed bulb may not match every chart entry. Checking the existing bulb helps avoid ordering the wrong base or style.
Can I switch to LED replacement bulbs on this vehicle?
In many cases, yes, but the replacement must fit the socket and work correctly with the housing and electrical system. Some LED conversions may require additional parts or may not be legal for every exterior position, so verify compatibility first.
Are all bulb sizes on this page guaranteed for every 2018 Hyundai Ioniq Hybrid?
No. The page is a fitment guide, but trim and lighting equipment can differ by market and body style. Always confirm the exact bulb position on your specific car.