Dodge Dakota front and rear turn signal bulbs utilize 3157NA, 3157, 2057, and 3057 bulb sizes depending on application and model year. The replacement chart covers 1987 through 2010 production 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 Dodge Dakota uses three distinct bulb types across its front and rear turn signal positions: the 3157, 3157NA, 3057, 2057, and 2057NA. All five are dual-filament bulbs operating on a 12V system, meaning each bulb serves two lighting functions from a single housing.
The 3157 and 3157NA are T25 wedge-type bulbs rated at 27W on the high filament and 7W on the low filament. The 3057 shares the same T25 wedge form and identical 27W/7W rating, making it physically similar to the 3157 family despite carrying a different part number.
The 2057 and 2057NA use a BAY15d bayonet base rather than a wedge mount, which is a fundamentally different attachment style from the T25 wedge used by the 3157 and 3057. This base difference means 2057-series bulbs are not interchangeable with 3157 or 3057 bulbs without a socket adapter.
The 2057 is described as a brighter variant of the 1157, though it shares the same BAY15d bayonet base as the 1157. Its ratings of 26.9W/8W differ slightly from the 3157 family's 27W/7W, reflecting a marginally higher low-filament output.
The "NA" suffix on the 3157NA and 2057NA designates natural amber glass, meaning the amber color is built into the bulb envelope itself rather than produced by a colored lens. A clear-lensed housing requires an NA-suffix bulb to produce a legally compliant amber signal.
For the Dodge Dakota front turn signal, the 2057 and 2057NA (BAY15d bayonet base) were specified for 1987-1995 model years, while the T25 wedge-based 3157 and 3157NA took over from 1996 onward. These two base types are physically incompatible with each other.
The front turn signal on the Dodge Dakota used the 3157NA (natural amber) for 2005-2010, compared to the clear-glass 3157 used for 1996-2004. This indicates a housing lens change between the 2004 and 2005 model years that shifted the amber output responsibility to the bulb itself.
The rear turn signal on the Dodge Dakota transitioned from the 3157 (used 1996-2004) to the 3057 (used 2005-2010). Although both are T25 wedge bulbs with identical voltage and wattage ratings, they carry different ANSI numbers and may have differing filament configurations or base keyway positions that affect direct substitution.
All five bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada, indicating they meet the same regulatory requirements across both markets.
For 1991-1994 Dodge Dakota front turn signals, the 2057NA was specified for 1991-1992 and the clear 2057 for 1993-1994, while the rear used the clear 2057 throughout 1988-1995. This means front and rear housings during the 1991-1992 period had different lens or color requirements despite using the same base bulb family.