Acura MDX 2009 Bulb Size
Bulb size chart
This 2009 Acura MDX bulb size guide helps you verify the correct bulbs by lighting position, so you can replace the right part the first time. Whether you are changing a headlight, a cabin light, or a rear marker lamp, this page is organized to make fitment checks simple and quick.
The 2009 Acura MDX uses a mix of halogen, HID, and LED lighting depending on the lamp location and equipment level. Because the exact setup can vary by trim, market, and body style, it is smart to match the bulb to the specific position on the vehicle instead of relying on a single size for the whole SUV.
For best results, compare the bulb listed here with the one already installed in your 2009 Acura MDX before buying replacements. Trim and package differences can affect fitment, especially on exterior lamps and interior convenience lights. Some positions may use halogen bulbs from the factory, while others may already be LED or HID, and aftermarket LED conversions can change beam pattern, brightness, and warning behavior. If you are upgrading from halogen to LED, make sure the new bulb physically fits the housing and is compatible with the socket and electrical system.
FAQ
What bulb does the 2009 Acura MDX use for the low beam headlight?
The low beam headlight bulb listed for the 2009 Acura MDX is D2S. This is the correct starting point for checking factory low beam fitment on this model.
What is the high beam bulb size for a 2009 Acura MDX?
The high beam bulb size is 9005. The same 9005 bulb is also listed for the daytime running light on this vehicle.
What bulb fits the front fog lights on a 2009 Acura MDX?
Front fog light fitment can vary, but the listed options are H11 LED and H16 LED. Check the installed bulb and housing before ordering, since trim and market differences can affect the exact setup.
What size is the reverse light bulb on this MDX?
The back up reverse light bulb is 921. This is the bulb to verify if you are replacing the rear reverse lamps on a 2009 Acura MDX.
What bulb is used for the front turn signal?
The front turn signal bulb is 7440A. Make sure you match the bulb type exactly, since turn signal bulbs can differ from rear signal bulbs.
What bulb is listed for the rear turn signal?
The rear turn signal bulb is 7440. It is different from the front turn signal bulb, so check both sides separately if you are replacing rear signal lamps.
What are the license plate light bulb sizes?
The license plate light bulb sizes listed are 168 and 917. Either may apply depending on the exact lamp setup, so confirm the bulb already in the housing before purchase.
What bulb does the dome light use in the 2009 Acura MDX?
The dome light bulb is DE3175. This is the interior overhead lamp size to use when replacing the main cabin dome light.
What bulb size is used for the map lights and rear reading lights?
The map light bulb sizes are 2825 and 98, and the rear reading light uses the same 2825 and 98 sizes. These are common interior bulbs, but it is still best to verify the installed bulb.
What bulb fits the vanity mirror light?
The vanity mirror light bulb is 24. If your mirror light is dim or burned out, confirm the socket style before ordering a replacement.
Does the 2009 Acura MDX use LED bulbs in some positions?
Yes. The center high mount stop light, brake light, and tail light are listed as LED on this page. That means those positions may not use a standard replaceable halogen bulb in the same way as other lights.
Why should I check the bulb already installed before buying replacements?
Because the 2009 Acura MDX can vary by trim, package, market, and lighting equipment. Checking the installed bulb helps avoid ordering the wrong size, especially for fog lights, interior lamps, and any position that may have been changed with aftermarket parts.