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Fitment Guaranteed for 2017 Buick Regal

What Size Bulbs Does a 2017 Buick Regal 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

$50 - $150 (HID System)

What Lighting System Does the 2017 Buick Regal Have?

The 2017 Buick Regal features an extensive lighting system with 13 bulb positions. It uses factory HID/Xenon technology with D3S projector headlights. The Regal has been available from 1997 to 2017, and the 2017 model falls in the late-generation years.

Can You Put LED Bulbs in a 2017 Buick Regal?

The 2017 Buick Regal comes equipped with factory D3S HID/Xenon headlights. These already produce significantly more light than halogen bulbs, so upgrading is generally unnecessary. When your HID bulbs burn out, replace them with OEM-spec D3S HID bulbs to maintain the correct color temperature and beam pattern. Avoid cheap aftermarket HID bulbs as they can produce incorrect beam patterns and blind oncoming drivers. Your fog lights use a 9145 LED halogen bulb, which can be upgraded to LED for a whiter color match with your HID headlights.

How to Replace Bulbs on a 2017 Buick Regal

To remove the headlight bulb, disconnect the wiring harness, then twist the bulb counter-clockwise and pull it straight out of the housing. On the 2017 Regal, you will likely encounter rubber dust covers behind the headlight housing. These pull off by hand or unscrew depending on the design. Allow about 15 to 20 minutes per side. HID headlights operate at high voltage. Always disconnect the battery before working on the headlight assembly. Never touch the HID ballast while the headlights are on, and handle the D3S capsule with gloves to avoid oil contamination. The fog lights are accessed from underneath the front bumper. You may need to remove a few plastic clips or screws from the fender liner to reach the 9145 LED fog light socket.

Full Upgrade Bundle

Upgrade All 13 Positions at Once

Low Beam: HID-D3S LEDHigh Beam: HID-D3S LEDFog Light: 9145 LEDBrake Light: LED BulbSide Marker: LED BulbTurn Signal Front: 7440NA or 12188NA LEDTurn Signal Rear: 7440 LEDDome Light: 2825License Plate: 194Map Light: 2825Parking Light: 7443Reverse Light: 921Trunk Light: 175
Shop Complete LED Kit

2017 Buick Regal Complete Bulb Size Chart

PositionBulb SizeShop
Low Beam
HID-D3S LEDBuy HID-D3S LED
High Beam
HID-D3S LEDBuy HID-D3S LED
Fog Light
9145 LEDBuy 9145 LED
Brake Light
LED BulbBuy LED Bulb
Side Marker
LED BulbBuy LED Bulb
Turn Signal Front
7440NA or 12188NA LEDBuy 7440NA or 12188NA LED
Turn Signal Rear
7440 LEDBuy 7440 LED
Dome Light
2825Buy 2825
License Plate
194Buy 194
Map Light
2825Buy 2825
Parking Light
7443Buy 7443
Reverse Light
921Buy 921
Trunk Light
175Buy 175

Want to upgrade everything at once?

Shop Complete LED Kit for 2017 Buick Regal
Installation Guide
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How Long Do 2017 Buick Regal Headlight Bulbs Last?

HID/Xenon headlights on the 2017 Buick Regal typically last 2,000 to 3,000 hours, or about 4 to 6 years of regular driving. As HID bulbs age, they shift color toward pink or purple, which is a clear sign that replacement is needed. Flickering on startup also indicates a worn bulb or failing ballast. At 9 years old, the original bulbs on your Regal are likely overdue for replacement. Even if they still illuminate, reduced brightness significantly impacts nighttime safety. When one headlight burns out, replace both sides at the same time. Bulbs from the same batch age at similar rates, and mismatched brightness is distracting to oncoming drivers.

What Bulbs Are Compatible with the 2017 Buick Regal?

Using the wrong bulb size can cause improper beam patterns that reduce your visibility and blind other drivers. It can also cause overheating inside the headlight housing, potentially warping the plastic lens or reflector. Always verify the bulb number before purchasing.

2017 Buick Regal Headlight FAQ

The 2017 Buick Regal uses a HID-D3S LED bulb for the low beam headlights. We recommend upgrading to LED for better visibility.

The high beam bulb size for the 2017 Buick Regal is HID-D3S LED.

The 2017 Buick Regal uses a single bulb (dual filament) headlight system. This means one bulb controls both high and low beams.

Yes, the 2017 Buick Regal comes with standard halogen bulbs from the factory, but they can be upgraded to LED. You will need a HID-D3S LED LED conversion kit for the low beams.

Yes, the 2017 Buick Regal takes a 9145 LED bulb for the fog light position.

Turn off the vehicle and open the hood. Locate the headlight assembly from behind, remove the dust cover or retaining clip, disconnect the wiring harness, twist the old HID-D3S LED bulb counter-clockwise to remove it, then insert the new bulb and reassemble. The whole process typically takes 10 to 30 minutes per side depending on accessibility.

LED bulbs used off-road or in auxiliary lights are legal everywhere. For on-road headlight use, legality varies by state. Many states allow LED retrofits as long as the beam pattern meets DOT standards. For the best legal compliance, choose a DOT-approved HID-D3S LED LED kit that is designed as a direct replacement and produces a proper cutoff pattern without excessive glare.

A pair of HID HID-D3S LED bulbs costs $50 to $150. If you have a shop do the work, expect an additional $20 to $50 in labor per bulb. Replacing them yourself at home saves the labor cost and usually takes under 30 minutes.

Halogen bulbs produce a warm yellow light (around 3200K), last 500 to 1000 hours, and draw more power. LED bulbs emit a brighter white light (5000-6000K), last 25,000+ hours, and use less energy. LED upgrades for the HID-D3S LED position are available as direct plug-and-play replacements.

Did Buick Regal Bulb Sizes Change Over the Years?

Over its production run from 1997 to 2017, the Buick Regal has seen bulb size changes in the Low Beam, High Beam and Fog Light positions. The 2017 model uses the newer bulb specification introduced around 2014. Always verify the exact bulb size for your specific 2017 model year using the chart above, as using the wrong size can result in poor fitment or reduced light output.

Other Regal Years

2016201420132012201120032001200019981997
AllureCascadaEnclaveEncoreEnvisionLaCrosseLucernePark Avenue

Other Vehicles That Use HID-D3S LED Bulbs

These vehicles from other makes also use a HID-D3S LED low beam bulb:

2023 Chevrolet Camaro2022 Dodge Charger2022 Dodge Durango2022 Hyundai Ioniq2022 Kia Sportage2021 Dodge Challenger