2017 Lexus RX 350 bulb fitment varies by lighting function, and the supplied data does not list a low-beam, high-beam, or fog-light bulb size. Confirm the headlight assembly and the original bulb before ordering, especially if replacing a headlight bulb.
For the exterior lighting that is listed, the front turn signal and parking light use 7444NA bulbs. The front side marker uses 168NA, while the rear turn signal uses an 7440A. The reverse light is fitted with a 921 bulb.
- Front turn signal: 7444NA
- Parking light: 7444NA
- Front side marker: 168NA
- Rear turn signal: 7440A
- Reverse light: 921
- Interior and trunk lights: 168
Because headlight bulb information is not provided for this model-year entry, do not assume a bulb size based on another RX 350 configuration. Verify the vehicle’s existing bulb or consult the headlamp housing before purchase.