Used for: Back Up Reverse Light Bulb, Turn Signal Light Bulb Rear
Used for: Glove Box Light Bulb(Compare to original - Option 1)
Used for: Glove Box Light Bulb(Compare to original - Option 2)
Used for: Interior Door Light Bulb
Used for: Trunk or Cargo Area Light
Used for: Trunk or Cargo Area Light
Used for: Vanity Mirror Light Bulb
This 2018 Acura TLX bulb size guide helps you verify the correct replacement bulb by lighting position, so you can match the right part before you buy. Whether you are replacing an exterior lamp or a small interior light, checking the bulb chart by location is the easiest way to avoid fitment mistakes.
The 2018 Acura TLX uses a mix of LED lighting and a few conventional bulb types depending on the lamp position. Because trim level, lighting package, market, and body style can affect the exact setup, this page is meant to help you confirm the bulb size for each area of the vehicle, from the headlights and fog lights to the trunk, glove box, and vanity mirror lights.
For best results, compare the bulb listed for your specific TLX with the bulb currently installed in the car before ordering. Some 2018 Acura TLX models use LED assemblies in positions such as the headlight, fog light, brake light, and many exterior markers, while other locations use replaceable bulbs like 7440, 168/917, 2721, 158, 74, or 6615F. Trim and package differences can matter, and aftermarket LED conversions may not fit or function the same as the original bulb type. If your car has been modified, or if you are unsure whether a lamp is factory LED or a replaceable bulb, checking the installed bulb and connector style first can save time and prevent returns.
On this page, the 2018 Acura TLX headlight high beam and low beam are listed as LED. That means the lighting is handled by an LED setup rather than a standard replaceable halogen bulb in those positions.
The front fog lights are listed as LED for the 2018 Acura TLX. In many cases, that means the fog light is part of an LED assembly rather than a simple bulb swap.
The rear turn signal light bulb is listed as 7440. If you are replacing only the rear signal lamp, this is the size to check against your original bulb.
The back up reverse light bulb is also listed as 7440. This is useful if you are replacing a burned-out reverse lamp on the rear of the vehicle.
Yes. The license plate light bulb is listed as LED on the 2018 Acura TLX, so it is typically not a standard incandescent bulb replacement.
The trunk or cargo area light is listed as 168 or 917. Either size may appear depending on the exact lamp configuration, so it is smart to compare the installed bulb before buying.
Two glove box light options are listed for comparison: 2721 and 74 optional raw list. Because glove box lighting can vary, checking the original bulb is the safest way to confirm which one your TLX uses.
The vanity mirror light bulb is listed as 6615F. If the mirror light is dim or out, this is the bulb size to verify for replacement.
The dome light and map light are listed as LED. These interior overhead lights are typically not replaced with a standard filament bulb.
The interior door light bulb is listed as 158. This is one of the few interior positions on the TLX that uses a conventional replaceable bulb size.
Yes, they can. Trim level, lighting package, market, and body style may affect whether a lamp is LED or uses a replaceable bulb, so always confirm the exact position on your specific car.
You can, but fitment and performance depend on the lamp housing and electrical setup. Some positions are already LED from the factory, while others use bulbs such as 7440, 168/917, 2721, 158, or 74. Aftermarket LED conversions may not match the original beam pattern, brightness, or warning behavior.
