Chevrolet Silverado 2500HD 2018 Bulb Size
Bulb size chart
This page for the 2018 Chevrolet Silverado 2500HD helps you verify bulb sizes by lighting position, so you can match the correct replacement before you buy. Whether you are changing a headlight, a marker lamp, or a license plate bulb, using the right bulb size saves time and helps avoid fitment problems.
The Silverado 2500HD can use different lighting setups depending on trim, body style, and market, so it is smart to confirm the bulb location on the vehicle and compare it with the chart below. For this year, common positions include low beam, high beam, fog lights, turn signals, brake lights, reverse lights, and interior courtesy bulbs.
Fitment can vary with trim package and with halogen versus LED equipment, especially on trucks that have been modified or fitted with aftermarket lighting. If your Silverado has been converted to LEDs, or if a previous owner changed a lamp assembly, the bulb size on the page may not match what is currently installed. Before ordering, check the existing bulb, inspect the socket, and compare the old part to the replacement. This is especially important for front lighting, fog lights, and any sealed or upgraded assemblies.
FAQ
What is the low beam bulb size for a 2018 Chevrolet Silverado 2500HD?
The low beam headlight bulb size listed for the 2018 Silverado 2500HD is H11.
What is the high beam bulb size on this truck?
The high beam headlight bulb size listed for the 2018 Chevrolet Silverado 2500HD is 9005.
What bulb does the front turn signal use?
The front turn signal light bulb size listed for this model year is 7443A.
What bulb size is used for the front side marker light?
The front side marker light bulb size listed for the 2018 Silverado 2500HD is 7443A.
What bulb is used for the rear turn signal?
The rear turn signal light bulb size listed for this truck is 7444NA.
What bulb size is used for the rear side marker light?
The rear side marker light bulb size listed for the 2018 Silverado 2500HD is 7444NA.
What is the brake light bulb size?
The brake light bulb size listed for this model is 7444.
What is the tail light bulb size?
The tail light bulb size listed for the 2018 Silverado 2500HD is 7444.
What bulb size is used for the center high mount stop light?
The center high mount stop light bulb size listed on this page is 921.
What bulb size is used for the reverse lights?
The back up reverse light bulb size listed for this truck is 921.
What bulb size is used for the license plate lights?
The license plate light bulb size listed for the 2018 Chevrolet Silverado 2500HD is 2825.
What bulb size is used for the fog lights?
The front fog light bulb listing on this page is 5202 LED.
Are the interior vanity mirror bulbs covered for this year?
Yes. The vanity mirror light bulb size listed for the 2018 Silverado 2500HD is 6612F.
Can trim level or body style change the bulb size?
Yes. Trim, lighting package, body style, and market can affect the exact bulb used, so it is best to confirm the installed bulb before ordering.
Should I choose halogen or LED replacements?
That depends on your current setup and what the housing is designed for. The page lists the bulb sizes by position, but LED upgrades should be matched carefully to the original housing and socket.