Buick LaCrosse 2016 Bulb Size
Bulb size chart
This 2016 Buick LaCrosse bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right replacement before you buy. Because Buick used different lighting setups depending on trim, package, and market, it is important to check the exact lamp location on your car rather than assuming one bulb fits every version.
Use this page to find common exterior and interior bulb sizes for the 2016 Buick LaCrosse, including headlights, turn signals, parking lights, reverse lights, map lights, license plate lights, and more. The chart is organized by position to make replacement easier and to reduce the chance of ordering the wrong bulb type.
Fitment can vary on the 2016 LaCrosse, especially between halogen and HID-equipped cars and between different trim or lighting packages. Some positions use LED assemblies rather than replaceable bulbs, while others use standard service bulbs, so always confirm what is installed on your vehicle before purchasing. If you are considering aftermarket LED conversions, make sure the bulb base, beam pattern, and polarity are compatible, and remember that a conversion may not perform the same as the original halogen or factory LED setup. The safest approach is to inspect the existing bulb or housing first, then compare it with the bulb size listed for your specific lighting position.
FAQ
What bulb size does the 2016 Buick LaCrosse use for the low and high beams with HID headlights?
For LaCrosse models with HID headlights, the high beam and low beam bulb size is D3S. This applies to the HID-equipped headlight setup listed for this year.
What is the headlight bulb size on a 2016 Buick LaCrosse with halogen headlights?
For halogen headlight models, the high beam and low beam bulb size is 9012. Be sure to confirm that your car has halogen headlights before ordering.
What bulb does the reverse light use on the 2016 Buick LaCrosse?
The back up reverse light bulb is 921. This is one of the standard replaceable bulbs on the vehicle.
What are the front turn signal and parking light bulb sizes?
On the 2016 Buick LaCrosse, the front turn signal bulb is 7444NA and the parking light bulb is also 7444NA. These positions use the same bulb size in the listed setup.
What bulb size is used for the rear turn signal?
The rear turn signal light bulb is 7440A. Check the lamp housing carefully, since rear lighting layouts can vary by market or trim.
Are the daytime running lights the same on HID and halogen models?
No. On HID headlight models, the daytime running light bulb is listed as LED, while halogen headlight models use 7443 for the daytime running light. The setup depends on the headlight type.
What is the front side marker bulb size on HID and halogen LaCrosse models?
For HID headlight models, the front side marker light bulb is LED. For halogen headlight models, the front side marker light bulb is 7443A. The correct size depends on the lighting package.
Do the brake lights, tail lights, and center high mount stop light use replaceable bulbs?
In the listed 2016 Buick LaCrosse configuration, the center high mount stop light, brake light, tail light, and rear side marker light are shown as LED. These are typically not standard replaceable bulbs like halogen service bulbs.
What bulb sizes are used for the license plate lights and interior map lights?
The license plate light bulb is 2825 or 98, and the map light bulb is also 2825 or 98. These same sizes are listed for some other interior positions as well.
What bulb size fits the glove box light and stepwell light?
Both the glove box light and stepwell light use 194 or 7441. Either size may be listed for the same position depending on the exact lamp design.
What bulb does the vanity mirror light use?
The vanity mirror light bulb is 7065. This is a separate interior bulb size from the map, glove box, and stepwell lights.
Why should I check the installed bulb before buying replacements?
Because trim, package, and body style can change the lighting setup, the installed bulb is the best confirmation of fitment. Checking the old bulb or the housing label helps you avoid ordering the wrong base or the wrong LED/HID/halogen type.