The Toyota Tundra tail light utilizes 3157, 2458, and 7443 bulb sizes depending on the specific version of the vehicle. Provided data covers a range from 2000 through 2021.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 3157 is an ANSI-standard dual-filament wedge bulb rated at 12V with a 27W high filament and 7W low filament, classified under the T25 body type. Its dual-filament design allows a single bulb to serve both brake and running light functions within one housing.
The 7443 is also an ANSI-standard dual-filament wedge bulb operating at 12V, but it carries a 21W high filament and 5W low filament within a smaller T20 body. Although both the 3157 and 7443 share a dual-filament wedge construction, their body sizes and wattage ratings differ, making them non-interchangeable.
The Toyota Tundra outer tail light uses the 3157 bulb across the majority of model years covered in the specifications, spanning 2000-2021 with the exception of certain years where the 7443 applies.
For the 2004-2006 Tundra, one set of outer tail light positions calls for the 7443 bulb rather than the 3157. Substituting a 3157 in a socket specified for the 7443 would result in an incorrect fit due to the difference in bulb body size between the T25 and T20 form factors.
The 2007 Tundra outer tail light specification carries a production date qualifier, with the 3157 applying to vehicles produced from November 2006 onward. The 2006 model year carries a corresponding qualifier noting applicability to vehicles produced to December 2006, reflecting a mid-cycle production change.
The 2003 Tundra outer tail light specification for the 3157 includes a fitment qualifier restricting it to vehicles with a standard deck configuration, indicating that body or bed variants may affect which tail light assembly is installed.