Buick Regal 2017 Bulb Size
Bulb size chart
This 2017 Buick Regal bulb size guide helps you verify the correct replacement bulb by lighting position, so you can match the right part before you buy. Because the Regal could be equipped with different lighting setups, the exact bulb size may depend on trim, package, body style, and whether the car uses HID or halogen headlights.
Use this page to check the bulb type for exterior lights, interior lights, and cargo-area lighting on the 2017 Regal. From headlamps and daytime running lights to license plate, reverse, and dome lights, the chart is organized to make fitment checks faster and reduce the chance of ordering the wrong bulb.
Fitment can vary across markets and equipment levels, so it is smart to confirm the installed bulb before replacing it. The 2017 Buick Regal may use different bulbs for halogen headlights versus HID headlights, and some positions are listed with more than one possible bulb size. If you are considering an aftermarket LED conversion, make sure the bulb base, connector style, polarity, and physical clearance match the factory housing. Also note that some LED replacements may require resistors or compatible modules to avoid warning messages or flicker. When in doubt, remove the old bulb and compare it directly before purchasing a new one.
FAQ
What bulb does the 2017 Buick Regal use for the low beam and high beam headlights with HID headlights?
For Regal models equipped with HID headlights, the high beam and low beam headlight bulb is D3S.
What is the headlight bulb size for a 2017 Buick Regal with halogen headlights?
For Regal models with halogen headlights, the high beam and low beam headlight bulb is 9012.
What bulb size is used for the front turn signal on the 2017 Buick Regal?
The front turn signal light bulb is 7440A.
What bulb does the rear turn signal use on this model year?
The rear turn signal light bulb is 7440.
What is the reverse light bulb size for the 2017 Buick Regal?
The back up reverse light bulb is 921.
What bulb fits the license plate lights on a 2017 Buick Regal?
The license plate light bulb is listed as 194 or 7441.
What bulb size is used for the dome light and map light?
The dome light bulb and map light bulb are listed as 2825 or 98.
What bulb does the vanity mirror light use?
The vanity mirror light bulb is 7065.
What bulb size is used for the interior door light and courtesy light?
The interior door light bulb and courtesy light bulb are listed as 6411 or 6428.
What bulb fits the front side marker light on the 2017 Buick Regal?
The front side marker light bulb is 194NA.
What bulb is used for the rear side marker, brake light, tail light, and center high mount stop light?
Those exterior rear LED positions are listed as LED lighting on this page, so the chart does not provide a separate replaceable bulb number for them.
Are the parking lights and daytime running lights the same on every 2017 Regal?
No. The bulb size depends on the headlight type. With HID headlights, the parking light and daytime running light are LED. With halogen headlights, both the parking light and daytime running light use 7443.
Can I use this page to choose LED replacement bulbs for my 2017 Buick Regal?
Yes, but check the exact lighting position and headlight type first. Some locations are already LED from the factory, while others use replaceable bulbs such as 921, 7440A, 7440, 7443, 9012, D3S, 194, 7441, 2825, 98, 7065, 6411, 6428, and 194NA.
Why do some bulb positions show more than one size?
Some 2017 Buick Regal trim and lighting combinations can vary, so a position may accept more than one listed bulb size depending on the installed assembly or market configuration.
What should I check before ordering replacement bulbs for my Regal?
Check the headlight type, trim, and the bulb currently installed in the vehicle. Comparing the old bulb to the chart is the best way to confirm fitment before purchase.