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Ford Explorer 2021 Bulb Size
Bulb size chart
Fog Light Bulb Front - LED
Headlight Bulb High Beam - 9005
Headlight Bulb Low Beam - LED
Back Up Light Bulb - 7440
Brake Light Bulb - LED
Center High Mount Stop Light Bulb - LED
Daytime Running Light Bulb - LED
License Plate Light Bulb - 168
Parking Light Bulb - 3757A
Side Marker Light Bulb Front - LED
Side Marker Light Bulb Rear - LED
Tail Light Bulb - LED
Turn Signal Light Bulb Front - 3757A
Turn Signal Light Bulb Rear - 7440
Dome Light Bulb - LED
Glove Box Light Bulb - 168
Map Light Bulb - 168
Trunk or Cargo Area Light - LED
9005 Bulbs
Used for: Headlight Bulb High Beam
7440 Bulbs
Used for: Back Up Light Bulb, Turn Signal Light Bulb Rear
168 Bulbs
Used for: License Plate Light Bulb, Glove Box Light Bulb, Map Light Bulb
3757A Bulbs
Used for: Parking Light Bulb, Turn Signal Light Bulb Front
If you are looking up bulb sizes for a 2021 Ford Explorer, this page is designed to help you verify the correct bulb by lighting position. The Explorer uses a mix of LED and halogen-style bulbs depending on the lamp location, so checking the exact position matters before you buy replacements.
Use the bulb chart for the 2021 Ford Explorer to match each exterior and interior light with the correct size. That includes low beam, high beam, fog lights, brake lights, tail lights, turn signals, reverse lights, and smaller interior bulbs such as map, dome, glove box, and cargo area lights.
Fitment can vary by trim, lighting package, market, and body style, so it is smart to confirm what is actually installed on your vehicle before ordering. Some positions on the 2021 Ford Explorer are LED assemblies rather than replaceable bulbs, while others use specific bulb types such as 9005, 168, 7440, or 3757A. If you are considering an aftermarket LED conversion, check beam pattern, polarity, heat management, and local regulations to make sure the upgrade works properly and remains road legal. When in doubt, remove the old bulb and compare it directly before purchase, especially for exterior lamps where trim differences can change the fitment.
FAQ
What bulb does the 2021 Ford Explorer use for the low beam headlight?
The low beam headlight is listed as LED on this page, so it is not a standard replaceable halogen bulb size.
What is the high beam bulb size for a 2021 Ford Explorer?
The high beam headlight bulb is 9005.
Are the fog lights on the 2021 Ford Explorer replaceable bulbs?
The fog light front position is listed as LED, which usually means the lamp is an LED unit rather than a simple bulb swap.
What bulb size is used for the front turn signal on a 2021 Ford Explorer?
The front turn signal light bulb is 3757A.
What bulb size is used for the rear turn signal on a 2021 Ford Explorer?
The rear turn signal light bulb is 7440.
What bulb size is used for the reverse lights on a 2021 Ford Explorer?
The back up light bulb is 7440.
What bulb size is used for the license plate lights?
The license plate light bulb is 168.
What bulb size is used for the glove box light?
The glove box light bulb is 168.
What bulb size is used for the map lights?
The map light bulb is 168.
Does the 2021 Ford Explorer use LED brake and tail lights?
Yes. The brake light bulb and tail light bulb are both listed as LED on this page.
Are the dome light and cargo area light bulbs replaceable on the 2021 Ford Explorer?
Yes, those positions are listed as LED for the dome light bulb and trunk or cargo area light, so check the exact lamp style before ordering replacements.
Why should I verify bulb size by lighting position on this vehicle?
Because the 2021 Ford Explorer uses different bulb types and LED units in different locations, and trim or package differences can change what is installed.
Can I use an LED replacement in place of a halogen bulb on the 2021 Ford Explorer?
Sometimes, but fitment and performance depend on the socket, housing, and local rules. For example, the high beam uses 9005, but an LED conversion should be checked for proper beam pattern and compatibility.
What should I do before buying replacement bulbs for my 2021 Ford Explorer?
Confirm the exact lighting position, compare the installed bulb or lamp assembly, and check whether your trim or lighting package uses a different setup than the standard chart.