For the 2019 Toyota Tundra, both the low-beam and high-beam fitment depends on the factory headlight type. Models with halogen headlights use a 9003 bulb for both functions, while models with LED headlights use LED for both low and high beams.
- Fog lights use H16 bulbs.
- Front turn signals, daytime running lights, and parking lights use 4157NA with halogen headlights or are LED with LED headlights.
- Reverse lights use 7440; brake and tail lights use 3157R.
- The center stop light and rear turn signals use 921.
- Front side markers use 168NA, while rear side markers use 3157A.
- Interior applications include 168 or 917 for dome, map, door-mirror, and license-plate lights; the glove box uses 2721, the trunk uses 921, and the vanity light uses 7065.