For the 2011 Toyota Tundra, the low-beam headlight uses an H11 bulb, while the high beam uses 9005. The supplied fitment data does not list a fog-light bulb, so verify the truck’s equipment before ordering fog replacements.
Several exterior functions use related-size bulbs but are not interchangeable by application. The front turn signal, daytime running light, and parking light use 4157NA. The brake and tail lights use 3157R, while the rear turn signal and rear side marker use 3157A. Reverse lights and the center stop light use 921. The front side marker uses 168NA.
For interior and auxiliary lighting, license plate, dome, door-mirror, and map-light locations may use 168 or 917. The step and glove-box lights use 2721, the vanity light uses 7065, and the ash light may use 2721 or 74; compare the original bulb for that application.