Buick LaCrosse 2008 Bulb Size
Bulb size chart
This 2008 Buick LaCrosse bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part to the right socket before you buy. Whether you are replacing a headlight, a tail light, or a small interior bulb, checking the location first is the easiest way to avoid fitment mistakes.
The 2008 Buick LaCrosse uses several different bulb types depending on where the light is installed. Some positions use standard halogen bulbs, while others may use LED or have market-specific differences. Use this page to compare the bulb chart by function and confirm the exact size for your vehicle’s lighting setup.
Fitment can vary by trim, lighting package, body style, and market, so it is smart to compare the chart with the bulb already installed in your car before ordering. If you are considering LED replacements, remember that an LED bulb may fit physically but still need the correct base and may not perform the same as the original halogen bulb. Aftermarket conversions can also affect beam pattern, brightness, and warning messages, especially for exterior lights. When in doubt, remove the old bulb and match the number printed on the base or glass before purchase.
FAQ
What is the low beam headlight bulb for a 2008 Buick LaCrosse?
The low beam headlight bulb listed for the 2008 Buick LaCrosse is H11. Always confirm the side and headlamp type before replacing both bulbs.
What high beam bulb does the 2008 Buick LaCrosse use?
The high beam headlight bulb is H9 on this model year. If one side is out, it is usually best to replace bulbs in pairs for even output.
What bulb fits the front turn signal on a 2008 Buick LaCrosse?
The front turn signal bulb is listed as 4157NA. This same bulb type is also used for the front parking light position on the chart.
What bulb is used for the rear brake light?
The rear brake light bulb is 3057R. Make sure to use the correct red-marked or equivalent brake-rated bulb for the rear lamp assembly.
What is the rear turn signal bulb size?
The rear turn signal bulb is 3057. This is separate from the brake light bulb, so do not mix the two positions when ordering.
What bulb do I need for the reverse lights?
The back up reverse light bulb listed for the 2008 Buick LaCrosse is 921. This is the bulb to check if your reverse lamps are dim or burned out.
What are the dome and map light bulb sizes?
Both the dome light and map light use 168 or 917 bulbs according to the chart. These are common interior bulbs, but it is still worth checking the installed bulb before buying.
What bulb fits the license plate light?
The license plate light bulb is 194 or 7441. This same bulb family is also used in several other small courtesy-style lighting positions on the car.
What bulb is used for the glove box and courtesy lights?
The glove box light and courtesy light both use 194 or 7441 bulbs. These small interior bulbs are easy to replace once you access the lens or housing.
What is the trunk or cargo area light bulb?
The trunk or cargo area light bulb is 912. If the trunk light is out, check the bulb and the socket for corrosion or a loose connection.
Does the 2008 Buick LaCrosse use the same bulb for inner and outer tail lights?
No. The inner tail light bulb is listed as 194 or 7441, while the outer tail light bulb is 3057R. Be sure to identify which section of the tail lamp you are replacing.
Can I switch the fog lights or daytime running lights to LED?
The chart lists H11 LED and H16 LED options for the front fog lights and daytime running lights. If you convert to LED, verify the exact base and check for compatibility with your vehicle’s lighting system.