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Acura TLX 2021 Bulb Size
Bulb size chart
7443 Bulbs
Used for: Back Up Reverse Light Bulb
7440 Bulbs
Used for: Turn Signal Light Bulb Rear
194 Bulbs
Used for: Interior Door Light Bulb
The 2021 Acura TLX uses different bulb sizes depending on the lighting position, so the safest way to shop is by matching the bulb to the exact location on the car. This page is designed to help you verify the correct bulb size for the 2021 Acura TLX before you buy replacements.
For this year and model, the available bulb chart entries on this page include the interior door light bulb, rear turn signal light bulb, and back up reverse light bulb. Because trim and lighting equipment can vary, it is important to confirm the bulb position and compare it with the chart rather than assuming every TLX uses the same setup.
Fitment can vary by trim, package, market, and body style, especially on vehicles that may use different halogen or LED lighting components from the factory. If your 2021 Acura TLX has been modified with aftermarket lighting, conversion kits, or replacement housings, the original bulb size may no longer match what is installed now. Before ordering, check the bulb currently in the vehicle, compare the base and connector style, and make sure the replacement is intended for your exact lighting position. This is the best way to avoid returns and get the right fit the first time.
FAQ
What bulb size does the 2021 Acura TLX use for the interior door light?
The bulb chart for this page lists the interior door light bulb as 194 for the 2021 Acura TLX.
What bulb size is used for the rear turn signal on the 2021 Acura TLX?
The rear turn signal light bulb listed for the 2021 Acura TLX is 7440.
What bulb size is used for the back up reverse light on the 2021 Acura TLX?
The back up reverse light bulb listed for the 2021 Acura TLX is 7443.
Why should I check the bulb position instead of buying by model name only?
The 2021 Acura TLX can use different bulbs depending on the lighting position, so matching by location helps ensure you get the correct fit for the specific lamp you are replacing.
Do all 2021 Acura TLX trims use the same bulbs?
Not always. Trim level, lighting package, market, and body style can affect the bulb setup, so it is best to verify the exact bulb position on your vehicle.
Can my 2021 Acura TLX have LED lighting in some areas and bulb replacements in others?
Yes. Some lighting functions may use LED assemblies while others use replaceable bulbs, which is why it is important to confirm the specific lamp before ordering parts.
What should I do if my TLX has aftermarket lighting installed?
Check the installed bulb or housing carefully, because aftermarket conversions can change the original fitment and the factory bulb size may no longer apply.
How can I confirm the correct replacement bulb before buying?
Remove the existing bulb and compare its base, connector, and printed number with the bulb chart for the 2021 Acura TLX before placing an order.
Is the rear turn signal bulb the same as the reverse light bulb on the 2021 Acura TLX?
No. The rear turn signal bulb and the back up reverse light bulb are different positions and use different bulb sizes on this page.
If my interior door light is dim or burned out, can I replace only the bulb?
If your vehicle uses a replaceable bulb in that location, you can usually replace just the bulb with the correct 194 size listed for the 2021 Acura TLX.
Will a bulb listed for another Acura model automatically fit my 2021 TLX?
Not necessarily. Even similar Acura models can use different bulb sizes or lighting assemblies, so always match the bulb to the 2021 TLX chart and the exact lamp position.
What is the main benefit of using this year page for bulb replacement?
It gives you a quick way to verify bulb sizes by lighting position for the 2021 Acura TLX, which helps reduce guesswork and makes replacement easier.