Chevrolet Impala 2018 Bulb Size
Bulb size chart
This page helps you verify the bulb sizes for the 2018 Chevrolet Impala by lighting position, so you can match the correct replacement to the right socket. Because trim level, lighting package, and body style can change the fitment, it is best to confirm the exact lamp location before buying any bulbs.
For the 2018 Impala, some exterior lights use LED assemblies while others use replaceable halogen or incandescent bulbs. The chart below is organized to help you quickly find the right bulb type for headlights, daytime running lights, tail lights, turn signals, reverse lights, license plate lights, and interior lamps.
Fitment can vary between trims and equipment packages, especially on cars with halogen headlights versus HID headlights, or when LED lighting is factory-equipped. If your Impala has been modified with aftermarket bulbs or conversion kits, the listed size may still match the socket but the light output, beam pattern, or warning behavior may differ. Before ordering, compare the installed bulb, the connector style, and the housing design to make sure you are buying the correct replacement for your specific vehicle.
FAQ
What bulb does the 2018 Chevrolet Impala use for the low beam and high beam headlights with halogen headlights?
Models with halogen headlights use 9005 bulbs for both the high beam and low beam positions.
What bulb is used for the headlights on the 2018 Impala with HID headlights?
The HID headlight setup uses D3S bulbs for both the high beam and low beam positions.
What is the daytime running light bulb size on a 2018 Chevrolet Impala with halogen headlights?
With halogen headlights, the daytime running light bulb is 9005.
What is the daytime running light bulb size on a 2018 Impala with HID headlights?
With HID headlights, the daytime running light bulb is LED.
What bulb fits the front turn signal and parking light on this Impala?
Both the front turn signal light and the parking light use 7444NA bulbs.
What bulb is used for the rear turn signal on the 2018 Chevrolet Impala?
The rear turn signal light bulb is 7443.
What bulb is used for the brake light and outer tail light?
The brake light bulb and the outer tail light bulb both use 7443R.
What bulb fits the inner tail light on the 2018 Impala?
The inner tail light bulb is listed as 194 or 7441.
What bulb is used for the rear side marker light?
The rear side marker light bulb is 7443A.
What bulb is used for the front side marker light?
The front side marker light bulb is 194NA.
What bulb fits the back up reverse light?
The back up reverse light bulb is 7440.
What bulb is used for the license plate light?
The license plate light bulb is 2825 or 98.
What bulb fits the glove box and trunk or cargo area lights?
Both the glove box light and the trunk or cargo area light use 194 or 7441 bulbs.
Does the 2018 Chevrolet Impala use LED bulbs in any factory positions?
Yes. The center high mount stop light is LED, and the daytime running light is also LED on HID-equipped models.
Should I check the bulb before ordering a replacement?
Yes. Even with the correct year and model, trim and lighting package differences can affect fitment, so checking the installed bulb is the safest way to confirm the replacement.