Acura TSX 2012 Bulb Size
Bulb size chart
This 2012 Acura TSX bulb size guide helps you verify the correct bulbs by lighting position, so you can match the right part before you buy. Whether you are replacing a headlight, brake light, map light, or license plate lamp, this page is organized to make fitment checks faster and easier.
The 2012 Acura TSX uses different bulb types depending on the light location, and some positions can vary by body style, trim, lighting package, and market. Use the bulb chart for the exact area you are servicing, especially for exterior lights where sedan and wagon applications may differ.
For best results, compare the bulb listing on this page with the bulb already installed in your car before ordering. Trim and package differences can affect fitment, and some positions may use halogen bulbs, LED units, or factory HID components depending on equipment. If you are considering aftermarket LED conversions, make sure the bulb base, depth, and beam pattern are compatible with the housing, since a bulb that fits physically may still perform poorly or trigger warnings. Checking the installed bulb first is the safest way to confirm the correct replacement for your 2012 Acura TSX.
FAQ
What is the low beam headlight bulb size for a 2012 Acura TSX?
The low beam headlight bulb is D2S on this 2012 Acura TSX. This is important because D2S is different from common halogen headlight bulbs and is typically used in HID-style headlamp systems.
What bulb does the high beam use on the 2012 Acura TSX?
The high beam headlight bulb size is 9005. If you are replacing both sides, it is usually smart to change them in pairs so the light output stays even.
What is the daytime running light bulb size?
The daytime running light bulb is 9005. On some vehicles the DRL and high beam may share the same bulb family, so confirm the correct lighting position before ordering.
What bulb size is used for the front fog lights?
Front fog light fitment is listed as H11 LED or H16 LED. Because this can vary, check the bulb installed in your specific TSX before purchasing a replacement.
What are the brake light and tail light bulb sizes?
The brake light bulb is 7443R, and the tail light bulb is also 7443R. The outer tail light bulb is listed as 7443R as well, so be sure you are replacing the correct rear lamp position.
What bulb is used for the rear turn signal?
The rear turn signal bulb is 7440A on the sedan. For wagon applications, the rear turn signal bulb is listed as 7440, so body style matters here.
What bulb size is used for the front turn signal and parking light?
The front turn signal bulb is 7528, and the parking light bulb is also 7528. The front side marker bulb uses the same 7528 bulb size.
What bulb fits the license plate lights?
The license plate light bulb is 168 or 917. These are common wedge-style bulbs used in small exterior courtesy and plate lamp applications.
What are the dome light and map light bulb sizes?
Both the dome light and map light use DE3175 bulbs. These interior bulbs are often easy to replace, but it still helps to match the old bulb size before installing a new one.
What bulb is used for the trunk or cargo area light?
The trunk or cargo area light uses a 168 or 917 bulb. This is the same bulb family used in several other small interior and exterior positions on the 2012 Acura TSX.
Does the 2012 Acura TSX use different bulbs for sedan and wagon models?
Yes. Some rear lighting positions differ by body style. For example, the sedan rear side marker is listed as 168NA, while the wagon rear side marker is listed as 7443A, and the wagon rear turn signal is listed as 7440.
How can I make sure I buy the right bulb for my TSX?
Use the bulb chart for the exact light position, then compare it with the bulb currently installed in your vehicle. Trim level, lighting package, and market differences can affect fitment, so checking the old bulb is the most reliable final step.