Buick Regal 2011 Bulb Size
Bulb size chart
This page helps you verify the correct bulb sizes for the 2011 Buick Regal by lighting position, so you can match the right replacement to the right lamp before you buy. Whether you are replacing a headlight, a tail light, or a small interior bulb, checking the exact location on the vehicle is the easiest way to avoid ordering the wrong part.
The 2011 Buick Regal uses a mix of halogen, HID, and interior bulbs depending on the lamp position and equipment level. Some bulbs are shared across multiple locations, while others change with trim, market, or lighting package, so it is worth confirming the fitment for each individual light on your car.
For the best fit, compare the listed bulb type with the bulb already installed in your Regal, especially if your car has an optional lighting package or has been modified with aftermarket parts. Some positions may use halogen bulbs from the factory, while others can be converted to LED with the right replacement, but LED upgrades may affect beam pattern, brightness, or warning behavior. If you are changing headlights or DRLs, make sure the bulb style matches the housing and connector, and always check the old bulb before purchasing a replacement so you can confirm the exact fitment for your trim and market.
FAQ
What is the low beam headlight bulb size for a 2011 Buick Regal?
The low beam headlight bulb listed for the 2011 Buick Regal is H11.
What bulb does the 2011 Buick Regal use for the high beam and low beam HID setup?
The high beam and low beam bulb listing for the optional HID setup is D1S.
What is the front turn signal bulb size on a 2011 Buick Regal?
The front turn signal bulb is 4157NA.
What bulb is used for the parking light on this Regal?
The parking light bulb is 4157NA.
What is the rear turn signal bulb size for the 2011 Buick Regal?
The rear turn signal bulb is 3157.
What bulb fits the brake light and tail light on this model?
The brake light bulb and tail light bulb are both listed as 3157R.
What is the back up reverse light bulb size?
The back up reverse light bulb is 3157.
What bulb is used for the front side marker light?
The front side marker light bulb is 194NA.
What bulb is used for the rear side marker light?
The rear side marker light bulb is 3157A.
What are the license plate light bulb sizes?
The license plate light bulb sizes are 2825 and 98.
What bulbs fit the dome and map lights in a 2011 Buick Regal?
The dome light bulb and map light bulb are listed as 2825 and 98.
What is the vanity mirror light bulb size?
The vanity mirror light bulb is 7065.
Can I replace the daytime running lights with LED bulbs?
The daytime running light listing includes H11 LED and H16 LED, but fitment can depend on the exact trim and lighting package, so confirm the installed bulb before buying.
Does trim level affect bulb fitment on the 2011 Buick Regal?
Yes. Trim, lighting package, market, and body style can change the bulb used in some positions, so it is best to verify by location rather than assume every Regal uses the same bulb.
Should I check the original bulb before ordering replacements?
Yes. Checking the installed bulb is the safest way to confirm the correct size, especially for exterior lamps and any vehicle that may have been converted to aftermarket lighting.