Chevrolet Silverado 1500 2018 Bulb Size
Bulb size chart
The 2018 Chevrolet Silverado 1500 uses different bulb sizes depending on the lighting position, so the safest way to shop is by matching the bulb to the exact lamp location. This page helps you verify the correct bulb size for each exterior and interior light, including headlights, brake lights, turn signals, marker lights, and cargo-area lighting.
Because Silverado 1500 configurations can vary by cab style, trim, and lighting package, the same model year may not use the same bulb in every position. Use the bulb chart on this page to confirm fitment before you replace any lamp on your 2018 Chevrolet Silverado 1500.
For best results, compare the bulb listed here with the one already installed in your truck before buying replacements. Trim and package differences can affect fitment, especially on vehicles with halogen versus LED lighting, factory appearance packages, or aftermarket conversions. If your Silverado has been modified, a previous owner may have changed the bulb type or housing, so checking the existing bulb is the most reliable way to avoid a mismatch. When in doubt, match the bulb by position and verify the connector and base style before installation.
FAQ
What bulb does the 2018 Chevrolet Silverado 1500 use for the headlight?
The listed headlight bulb for the 2018 Chevrolet Silverado 1500 is D5S for both high beam and low beam on the applicable setup shown on this page.
What is the brake light bulb size for this Silverado?
The brake light bulb listed for the 2018 Chevrolet Silverado 1500 is 7444.
What bulb fits the tail light on a 2018 Silverado 1500?
The tail light bulb listed for this truck is 7444.
What bulb is used for the rear turn signal?
The rear turn signal bulb listed for the 2018 Chevrolet Silverado 1500 is 7444NA.
What bulb fits the front turn signal?
The front turn signal bulb listed for this model is 7443A.
What bulb is used for the front side marker light?
The front side marker light bulb listed for the 2018 Chevrolet Silverado 1500 is 7443A.
What bulb fits the rear side marker light?
The rear side marker light bulb listed for this truck is 7444NA.
What bulb is used for the license plate light?
The license plate light bulb listed for the 2018 Chevrolet Silverado 1500 is 2825.
What bulb fits the reverse light?
The back up reverse light bulb listed on this page is 921.
What bulb is used for the center high mount stop light?
The center high mount stop light bulb listed for the 2018 Chevrolet Silverado 1500 is 921.
What bulb fits the cargo area light?
The trunk or cargo area light bulb listed for this model is 921.
What bulb is used for the parking light?
The parking light bulb listed for the 2018 Chevrolet Silverado 1500 is 7443.
What bulb fits the vanity mirror light?
The vanity mirror light bulb listed for this truck is 6612F.
Why should I check my installed bulb before ordering?
Because trim level, body style, and lighting package can change the correct bulb, checking the installed bulb helps confirm the exact fit before you buy.
Can aftermarket LED bulbs be used in this Silverado?
Yes, but only if the LED bulb or conversion kit matches the housing and connector requirements for your specific lamp position. Some setups may need additional parts to work correctly.