Cadillac Escalade 2018 Bulb Size
Bulb size chart
This page is for the 2018 Cadillac Escalade and is designed to help you verify the correct bulb size by lighting position. Instead of guessing from a generic parts list, you can match each exterior and interior light location to the bulb type shown for this model year.
The 2018 Escalade uses LED lighting for many positions, including the headlights, brake lights, tail lights, daytime running lights, and several cabin lamps. That makes fitment easier in some areas, but it also means the exact bulb type can vary by location, trim, and lighting package.
Before buying replacement bulbs, check the trim level, body style, and market-specific equipment on your Escalade, because lighting packages can differ even within the same model year. Some positions on this vehicle are listed as LED, while others may use a serviceable bulb such as the front turn signal bulb 7440A or the license plate bulb 2825/98. If you are converting from halogen to LED or using an aftermarket LED replacement, make sure the new bulb matches the socket, polarity, and space available inside the housing. It is always smart to inspect the installed bulb before ordering, especially for exterior lamps and any interior light that may have been changed previously.
FAQ
What bulb sizes are listed for the 2018 Cadillac Escalade headlights?
The headlight high beam and low beam are listed as LED on this page. That means the headlamp assembly uses LED lighting rather than a standard replaceable halogen bulb size for this position.
Does the 2018 Cadillac Escalade use LED brake lights?
Yes. The brake light bulb position is listed as LED for the 2018 Escalade.
What is the front turn signal bulb size for the 2018 Escalade?
The front turn signal light bulb is listed as 7440A.
What bulb does the license plate light use on this model?
The license plate light bulb is listed as 2825, 98.
Are the rear turn signals on the 2018 Cadillac Escalade LED?
Yes. The rear turn signal light bulb position is listed as LED.
What about the back-up reverse lights?
The back-up reverse light bulb is listed as LED on this page.
Which interior bulbs are covered for the 2018 Escalade?
This page includes LED listings for the trunk or cargo area light, dome light, map light, and interior door light.
Are the side marker lights LED on the 2018 Escalade?
Yes. Both the front side marker light bulb and rear side marker light bulb are listed as LED.
Can bulb fitment vary between Escalade trims?
Yes. Trim level, lighting package, body style, and market can affect the exact bulb setup, so it is important to confirm the specific vehicle configuration before ordering.
Why should I check the installed bulb before purchasing a replacement?
Because some bulbs may have been changed previously, and some positions can differ by package or market. Checking the installed bulb helps confirm the correct socket and size before you buy.
Can I replace an LED bulb with an aftermarket LED upgrade?
In some positions, yes, but the replacement must fit the socket, work with the vehicle’s electrical system, and physically fit inside the housing. For sealed LED assemblies, the entire unit may need service rather than a simple bulb swap.
Is this page useful for both exterior and interior lighting?
Yes. It covers major exterior lights like headlights, brake lights, tail lights, turn signals, and reverse lights, plus interior lights such as the dome, map, door, and cargo area lamps.