2021 Acura TLX bulb fitment data does not list a low-beam or high-beam bulb size. Because no headlight bulb code or projector/non-projector distinction is supplied, verify the original headlight assembly and owner’s manual before ordering replacement headlight bulbs.
The listed exterior lighting fitment includes a 7443 bulb for the reverse lights and a 7440 bulb for the rear turn signals. The interior lighting entry uses a 194 bulb. These are the only bulb sizes provided for this model year in the supplied data.
- Low beam: not listed in the supplied fitment data
- High beam: not listed in the supplied fitment data
- Reverse light: 7443
- Rear turn signal: 7440
- Interior: 194
Check the existing bulb or socket before purchasing, particularly if the vehicle has different equipment or a replacement lighting assembly.