For the 2009 Acura MDX, the low-beam headlights use D2S bulbs, while the high beams use 9005 bulbs. The daytime running lights also use 9005. The supplied fitment data does not specify a projector or non-projector headlight variation, so confirm the existing bulb and housing before ordering.
Other notable exterior fitments include two listed fog-light options: H11 LED or H16 LED. Front turn signals use 7440A bulbs, and rear turn signals use 7440. Reverse lights take 921 bulbs. The brake, center stop, and tail lights are listed as LED assemblies.
- Parking and license plate lighting: 168 or 917
- Front and rear side markers: 168NA
- Dome light: DE3175
- Map and reading lights: 2825 or 98
- Trunk light: 168 or 917
Because several interior and utility locations have more than one listed size, compare the original bulb or socket with the replacement before purchasing.