What Size Bulbs Does a 2018 Buick Regal TourX Use?
Correct headlight, fog light, and tail light bulb sizes. Sourced from OEM catalog data.
Installation Difficulty
Moderate (Dust covers often present)
Est. Replacement Cost
$15 - $40 (Halogen) / $30+ (LED)
What Lighting System Does the 2018 Buick Regal TourX Have?
The 2018 Buick Regal TourX utilizes a refined lighting configuration featuring 13 distinct bulb positions. It features an extensive lighting system powered by a halogen-based setup where a single H7 LED dual-filament bulb handles both low and high beam duties within the same reflector.
Can You Put LED Bulbs in a 2018 Buick Regal TourX?
Upgrading to LED is one of the most effective ways to modernize your Buick's appearance and safety profile. Since your Regal TourX uses a single H7 LED bulb for both high and low beams, ensure your chosen LED kit is "dual-beam" compatible. This allows the LED circuitry to mimic the two-filament design of the original halogen bulb. Don't forget the H8 LED fog lights; switching these to LED can dramatically improve your visibility in adverse weather.
2018 Buick Regal TourX Bulb Size Chart
| Position | Bulb Size | Shop |
|---|---|---|
| Low Beam | H7 LED | Buy H7 LED → |
| High Beam | H7 LED | Buy H7 LED → |
| Fog Light | H8 LED | Buy H8 LED → |
| Brake Light | LED Bulb | Buy LED Bulb → |
| Side Marker | LED Bulb | Buy LED Bulb → |
| Turn Signal Front | LED Bulb | Buy LED Bulb → |
| Turn Signal Rear | 921 LED | Buy 921 LED → |
| Dome Light | LED Bulb | Buy LED Bulb → |
| License Plate | LED Bulb | Buy LED Bulb → |
| Map Light | LED Bulb | Buy LED Bulb → |
| Parking Light | LED Bulb | Buy LED Bulb → |
| Reverse Light | 921 | Buy 921 → |
| Trunk Light | 175 | Buy 175 → |
How do the 2018 Buick Regal TourX's bulbs compare to other years?
The 2019 model continues with the same bulb sizes.
This bulb configuration covers the 2018–2019 model years. 2019 →
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