Used for: Back Up Light Bulb, Turn Signal Light Bulb Rear
Used for: Brake Light Bulb
Used for: Stepwell Light Bulb
Used for: Glove Box Light Bulb
Used for: Interior Door Light Bulb
Used for: Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This 2020 Acura MDX bulb size page is designed to help you quickly verify the correct bulb by lighting position. Whether you are replacing an exterior lamp or a small interior bulb, matching the socket location is the easiest way to avoid ordering the wrong part.
The 2020 Acura MDX uses different bulb types depending on the light location, and some trims or lighting packages may vary. Use the chart on this page to confirm the bulb size for each position before you buy, especially if you are replacing a rear signal, backup light, or cabin light.
Fitment can vary by trim, market, and body style, so it is smart to compare the bulb in your vehicle with the listing before ordering. Some 2020 Acura MDX models may use halogen bulbs in certain positions while others may have LED assemblies or different package-specific hardware. If you are considering an aftermarket LED conversion, make sure the bulb base, polarity, and available space inside the housing are compatible. For the most reliable result, check the installed bulb number or remove the bulb and match it directly before purchase, especially for interior lights and rear lighting positions.
The trunk or cargo area light uses bulb size 168 on this 2020 Acura MDX bulb chart.
The rear turn signal light bulb size listed for the 2020 Acura MDX is 7440.
The back up light bulb size shown for this model year is 7440.
The glove box light bulb size is 2721 for the 2020 Acura MDX.
The stepwell light bulb size listed is DE3022.
The vanity mirror light bulb size is 6612F.
The brake light bulb size shown on this page is 7440R.
The interior door light bulb size listed is 158, and it is marked as optional on the raw bulb list.
Not always. Trim level, lighting package, market, and body style can change the bulb setup, so it is best to confirm the exact position on your vehicle.
Sometimes, but not every position is a direct swap. You need to confirm the base type, fitment, and whether the housing supports an LED replacement without issues.
Checking the installed bulb helps confirm the exact size and avoids ordering the wrong part, especially when the same model year can have different lighting configurations.
Yes, both positions are listed as 7440 on the 2020 Acura MDX bulb chart.
