Lincoln Aviator inner tail light uses a 916 bulb size while the outer tail light requires a 3057 bulb size. The replacement chart covers 2003 to 2005 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Lincoln Aviator uses two distinct bulb types across its tail light assembly for the 2003-2005 model years: the 916 for the inner position and the 3057 for the outer position.
The 916 is an ANSI-standard wedge bulb rated at 12V and 18W, housed in a T15 form factor, which refers to the bulb's tubular wedge shape measured in eighths of an inch.
The 3057 is an ANSI-standard dual-filament wedge bulb rated at 12V with a T25 form factor, carrying two separate wattage ratings of 27W and 7W corresponding to its high and low filaments respectively.
The dual-filament design of the 3057 allows a single bulb to serve two functions within the outer tail light, typically combining stop and tail light operation through its two filaments.
Both the 916 and 3057 carry ANSI certification applicable to the United States and Canada, indicating conformance to a standardized set of electrical and physical specifications.
The T15 and T25 designations indicate different physical sizes between the two bulb types, meaning the 916 and 3057 are not interchangeable with each other despite both using wedge-style bases.
The inner and outer tail light positions on the Lincoln Aviator (2003-2005) require separate bulb selections, and substituting the 3057 into the inner position or the 916 into the outer position would result in a wattage and fitment mismatch.
The 916 bulb's single-filament, 18W output is consistent with a dedicated indicator or supplemental lighting role rather than a combined stop and tail function.