The 2017 Mazda CX-9 uses LED bulbs for both the low-beam and high-beam headlights. The fog lights, daytime running lights, brake lights, center stop light, tail lights, and rear side marker are also LED.
Lighting fitment varies with adaptive lighting. Models with adaptive lighting use LED bulbs for the front turn signals, parking lights, and front side markers. Without adaptive lighting, the front turn signals use 7440A bulbs, while the parking lights and front side markers use 2827 bulbs.
- Rear turn signal: 7440A
- Reverse light: 921
- License plate light: 2825 or 98
- Dome, map, and trunk lights: DE3175
Check whether the CX-9 has adaptive lighting before ordering front turn signal, parking light, or front side marker replacements. The supplied fitment lists do not provide a non-LED replacement size for the LED headlight assemblies.