Acura MDX 2012 Bulb Size
Bulb size chart
This 2012 Acura MDX bulb size guide is designed to help you verify the correct bulb by lighting position, so you can match the right part to the right lamp before you buy. Whether you are replacing a headlight, a reverse light, or a small interior bulb, checking the location-specific fitment is the easiest way to avoid ordering the wrong size.
The 2012 Acura MDX uses a mix of halogen, HID, and LED lighting depending on the position and equipment level. That means the correct bulb can vary from one area of the vehicle to another, and some exterior and interior lamps may differ by trim, package, or market. Use this page as a quick reference for the most common bulb types listed for this model year.
For best results, compare the bulb position on your vehicle with the chart before purchasing, especially if your MDX has a premium lighting package or has been modified. Some locations use halogen bulbs, while others may use LED assemblies or HID low beams, so an aftermarket conversion may not match the original setup exactly. If you are unsure, remove the installed bulb and check the base and markings before ordering a replacement.
FAQ
What bulb does the 2012 Acura MDX use for the low beam headlights?
The 2012 Acura MDX uses a D2S bulb for the low beam headlight position.
What bulb size is used for the high beam headlights?
The high beam headlight bulb is 9005 on the 2012 Acura MDX.
What bulb does the daytime running light use?
The daytime running light bulb is listed as 9005 for this model year.
What is the reverse light bulb size on a 2012 Acura MDX?
The back up reverse light bulb is 921.
What bulb fits the front turn signal on this MDX?
The front turn signal light bulb is 7440A.
What bulb is used for the rear turn signal?
The rear turn signal light bulb is 7440.
What size is the license plate light bulb?
The license plate light bulb is 168 or 917.
What bulb is used for the parking light?
The parking light bulb is 168 or 917.
What bulb fits the front and rear side marker lights?
Both the front side marker light and rear side marker light use 168NA.
What bulb does the fog light use on the 2012 Acura MDX?
The front fog light bulb is listed as H11 LED or H16 LED, depending on the setup.
Are the dome light and map light bulbs the same size?
Both the dome light bulb and map light bulb are listed as LED on this page, so check the installed unit before replacing them.
What bulb is used for the trunk or cargo area light?
The trunk or cargo area light uses 168 or 917.
What bulb fits the interior door light?
The interior door light bulb is 158.
What bulb is used for the stepwell light?
The stepwell light bulb is DE3021.
What bulb fits the vanity mirror light?
The vanity mirror light bulb is 24.
Do trim levels or packages affect bulb fitment on the 2012 Acura MDX?
Yes. Trim and lighting package can vary by market and body style, so some bulb applications may differ slightly. Always confirm the exact lamp position on your vehicle before buying.
Should I check the installed bulb before ordering a replacement?
Yes. Checking the installed bulb is the safest way to confirm the correct base and fitment, especially for LED conversions or vehicles with prior repairs.