Acura MDX 2018 Bulb Size
Bulb size chart
Looking for bulb sizes for the 2018 Acura MDX? This page is designed to help you verify the correct bulb type by lighting position, so you can match the right replacement to the right lamp. The MDX uses a mix of LED and incandescent bulbs depending on the location, and some items can vary by trim, package, or market.
Use the bulb chart to check exterior and interior lighting one area at a time, including headlights, fog lights, turn signals, license plate lights, dome and map lights, cargo lighting, and more. That makes it easier to confirm what your vehicle needs before you buy parts or start a repair.
Fitment on the 2018 Acura MDX can differ by trim level, lighting package, body style, and regional specification, so it is smart to compare the chart with the bulbs already installed in your vehicle. Some positions are LED assemblies, while others use replaceable bulbs such as 7440, 7440R, 168/917, 158, 2721, DE3022, 6615F, or 74 depending on the location. If you are considering an aftermarket LED conversion, check polarity, beam pattern, and error-free compatibility before ordering. For the best results, inspect the installed bulb or housing first, especially on items that may have more than one listed option, before purchasing replacements.
FAQ
What bulb size does the 2018 Acura MDX use for the low beam headlight?
The low beam headlight is listed as LED on this page. Because the headlight setup is an LED assembly, there is no separate standard halogen bulb size shown here for the low beam position.
What bulb size does the 2018 Acura MDX use for the high beam headlight?
The high beam headlight is also listed as LED. On this vehicle, the headlight system may be part of an LED assembly rather than a traditional replaceable bulb.
What is the front fog light bulb for the 2018 Acura MDX?
The front fog light bulb is listed as LED. If your MDX has a different lighting package or market-specific setup, confirm the installed unit before replacing it.
What bulb size is used for the front turn signal on the 2018 Acura MDX?
The front turn signal light is listed as LED. That means the front signal may be integrated into an LED housing rather than using a standard service bulb.
What bulb size is used for the rear turn signal on the 2018 Acura MDX?
The rear turn signal bulb is listed as 7440. This is one of the replaceable bulb positions on the MDX and should be matched carefully to the rear lamp socket.
What bulb size is used for the back-up reverse light on the 2018 Acura MDX?
The back-up reverse light bulb is listed as 7440. Always confirm the bulb shape and base style before ordering, since reverse light housings can vary by trim or market.
What bulb size is used for the brake light on the 2018 Acura MDX?
The brake light bulb is listed as 7440R. This is a specific rear lamp fitment, so it is important not to substitute it with a different 7440 variant unless your vehicle’s housing calls for it.
What bulb size is used for the license plate light on the 2018 Acura MDX?
The license plate light is listed as LED. If one side is out, the entire lamp may still be an LED unit rather than a simple bulb swap.
What bulb size is used for the trunk or cargo area light on the 2018 Acura MDX?
The trunk or cargo area light is listed as 168 or 917. Either designation may appear depending on the exact lamp and market configuration, so check the installed bulb before buying.
What bulb size is used for the vanity mirror light on the 2018 Acura MDX?
The vanity mirror light bulb is listed as 6615F. This is a small interior bulb, so handle it carefully and match the original size when replacing it.
What bulb size is used for the glove box light on the 2018 Acura MDX?
Two glove box light options are shown: 2721 for one comparison listing and 74 for an optional raw list entry. Because both appear in the data, it is best to verify the installed bulb before ordering.
Are all exterior lights on the 2018 Acura MDX replaceable bulbs?
No. Several exterior positions are listed as LED, including the headlights, fog lights, daytime running lights, parking lights, side markers, and some other lamps. Those may be integrated assemblies rather than individual bulbs.
Why should I check the bulb already installed before buying parts for my 2018 Acura MDX?
Checking the installed bulb helps avoid ordering the wrong part, especially on a vehicle like the 2018 Acura MDX where trim, package, and market differences can change the lighting setup. It is the safest way to confirm fitment for both LED and non-LED positions.