Buick Regal TourX 2018 Bulb Size

Bulb size chart

Fog Light Bulb Front - H8 LED
Headlight Bulb High Beam - H7
Headlight Bulb Low Beam - H7
Back Up Reverse Light Bulb - 921
Side Marker Light Bulb Front - 2827
Turn Signal Light Bulb Rear - 921

H8 LED Bulbs

Used for: Fog Light Bulb Front

Sealight L2 Series

Sealight L2 Series

Prevents blinding on-coming vehicles: these light bulbs utilize the super high quality and most modern technology LED chips. This technology helps you get a LED array similar to the filament inside of an original halogen bulb. This creates a nice cut line on top of the beam. No pain in replacing bulbs often: a maximum level of heat dissipation is achieved when they are in use thanks to the ball-bearing cooling fan, the copper thermal heat sink, and the high-density aluminum body, ensuring up to 50,000 hrs lifespan.

$27.94

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View all 4 replacement options for size H8 LED →

H7 Bulbs

Used for: Headlight Bulb High Beam, Headlight Bulb Low Beam

View all 22 replacement options for size H7 →

921 Bulbs

Used for: Back Up Reverse Light Bulb, Turn Signal Light Bulb Rear

View all 14 replacement options for size 921 →

2827 Bulbs

Used for: Side Marker Light Bulb Front

KATUR Extremely Bright 2827 LED Light Bulbs

KATUR Extremely Bright 2827 LED Light Bulbs

Upgrade your vehicle's lighting with the KATUR Extremely Bright 2827 LED Light Bulbs and experience superior brightness, energy efficiency, and durability. Enjoy a crisp and clear white light with a color temperature of 6000K, providing enhanced visibility and a modern aesthetic. Don't settle for dim and outdated bulbs when you can have the best. Choose KATUR for exceptional quality and performance in LED lighting.With a T10 base type, these LED bulbs are a direct replacement for your existing car lights, making installation quick and hassle-free. Designed with three powerful 3030 SMD LEDs, these bulbs deliver an incredibly bright and crisp white light that enhances visibility and adds a touch of modern elegance to your vehicle. Thanks to the 360-degree beam angle, these LED bulbs offer a uniform and consistent illumination, eliminating hot spots and providing a wide coverage area. Whether you need to enhance your interior cabin lights, license plate lights, side marker lights, or any other compatible car light, these bulbs are up to the task. Operating at a voltage range of 12V to 16V, these bulbs are highly versatile and can be used in various vehicles without any compatibility issues. With a low wattage of 1.5W, they consume minimal power while still delivering an impressive brightness of 350 lumens. Say goodbye to inefficient incandescent bulbs and enjoy the benefits of energy-saving LED technology.

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View all 10 replacement options for size 2827 →

The 2018 Buick Regal TourX is a wagon-style version of the Regal with a unique lighting setup that can vary by market and trim. This page helps you verify bulb sizes by lighting position so you can match the correct bulb to the rear, front, and headlight locations before you buy.

Use the bulb chart on this page as a quick reference for the 2018 Buick Regal TourX. It lists the available bulb sizes by function, which makes it easier to confirm whether you need a replacement for a turn signal, reverse light, fog light, side marker, or headlight application.

Fitment can differ depending on trim level, lighting package, body style, and regional market, so it is smart to compare the bulb in the vehicle before ordering. Some positions may use halogen bulbs from the factory, while others may be LED-based or use LED-compatible housings, and aftermarket conversions can change the correct replacement choice. If you are upgrading from halogen to LED, make sure the bulb shape, base, and physical clearance are compatible with the housing. The safest approach is to check the installed bulb or the original owner’s manual before purchase, especially for the 2018 Buick Regal TourX where front lighting equipment may vary.

FAQ

What bulb sizes are listed for the 2018 Buick Regal TourX on this page?

The listed bulb sizes are 921 for the rear turn signal light, 921 for the back up reverse light, H8 LED for the front fog light, 2827 for the front side marker light, H7 for the high beam headlight, and H7 for the low beam headlight.

Does the 2018 Buick Regal TourX use the same bulb for high beam and low beam headlights?

Yes, the bulb chart on this page shows H7 for both the high beam headlight and the low beam headlight. Always confirm the exact setup on the vehicle, since trim and lighting package differences can affect fitment.

What is the rear turn signal bulb size for the 2018 Buick Regal TourX?

The rear turn signal light bulb size listed here is 921.

What is the reverse light bulb size for the 2018 Buick Regal TourX?

The back up reverse light bulb size listed here is 921.

What bulb is used for the front fog lights on the 2018 Buick Regal TourX?

The front fog light bulb is listed as H8 LED on this page.

What is the front side marker bulb size for the 2018 Buick Regal TourX?

The front side marker light bulb size listed here is 2827.

Can trim level or lighting package change the bulb size on a 2018 Buick Regal TourX?

Yes. Trim and lighting package can vary by market and body style, so the exact bulb used on your vehicle may differ from the chart in some cases. Checking the installed bulb is the best way to confirm.

Should I buy LED replacements for every bulb on the 2018 Buick Regal TourX?

Not necessarily. Some positions may already use LED or LED-specific bulbs, while others may be designed for halogen fitment. Match the bulb type to the housing and confirm compatibility before upgrading.

How can I make sure I get the right replacement bulb?

Check the bulb position, compare it to the chart on this page, and inspect the installed bulb if possible. The owner’s manual and the existing bulb base are both helpful for confirming fitment.

Are aftermarket LED conversions always a direct fit on the 2018 Buick Regal TourX?

No. Even if the bulb shape looks similar, aftermarket LED conversions may have clearance, beam pattern, or compatibility issues. Verify the base type and housing requirements before installing them.

Why does the bulb chart matter for the 2018 Buick Regal TourX?

It helps you identify bulb sizes by lighting position instead of guessing by model name alone. That is especially useful when different trims or regional versions use different lighting equipment.

What should I do if my 2018 Buick Regal TourX has a different bulb than listed here?

Use the bulb in the vehicle as the final reference and compare it with the chart. If the installed bulb does not match, your vehicle may have a different trim, package, or market-specific lighting setup.

Buick Regal TourX Bulb Size by Year