2018 Acura RDX bulb fitment uses LED lighting for both the low-beam and high-beam headlights. The supplied fitment data does not identify a separate halogen, projector, or non-projector headlight variation, so confirm the original lamp assembly before ordering replacement parts.
The fog lights have two listed options: H11 LED and H16 LED. Verify the existing fog-light bulb or housing to determine which application your RDX uses.
- Front turn signals, brake lights, center stop light, daytime running lights, parking lights, tail lights, rear side markers, and map lights are listed as LED.
- The rear turn signal uses 7440A, while the reverse light uses 921.
- Front side markers use 168NA.
- License plate and trunk lighting may use either 168 or 917; check the installed bulb before purchase.
- Interior applications include DE3175 for the dome light, 2721 for the glove box, 194 and 7441 for listed interior locations, and 6615F for the vanity light.