For the 2019 Lexus RX 350, both the low-beam and high-beam headlights use LED lighting. The fog lights are also LED, so this fitment does not list a conventional halogen headlight bulb size.
Most exterior lighting is LED, including the brake lights, center stop light, cornering lights, rear side markers, tail lights, license plate lights, and rear turn signals on applicable LED-equipped assemblies. Front turn signals and parking lights may use 7444NA, while an LED configuration is also listed for the front turn signal. Front side markers may use 168NA or LED.
- Rear turn signal: 7440A or LED
- Reverse light: 921
- Interior and trunk: 168 where listed
- Dome, map, and glove-box lights: LED
Check the existing assembly before ordering, particularly for front and rear turn signals and front side markers, since both replaceable-bulb and LED fitments are listed.