For the 2016 Lexus RX 350, the supplied fitment data does not list a low-beam, high-beam, or fog-light bulb size. Confirm the headlight assembly and vehicle configuration before ordering replacement headlight bulbs, since no headlight code is provided here.
The listed exterior lighting uses a few different bulb types. The front turn signals and parking lights use 7444NA bulbs, while the front side markers use 168NA. At the rear, the turn signals use 7440A, and the reverse lights use 921.
For interior and cargo lighting, both the interior lights and trunk light are listed as 168. These fitments cover the supplied lighting positions, but they do not establish compatibility for unlisted headlight applications. Verify the original bulb or consult the vehicle’s lighting documentation before purchasing low-beam, high-beam, or fog-light replacements.