The Dodge 400 front turn signal requires a 2057NA or 2057 bulb size, while the rear turn signal uses a 2057 bulb size. The replacement chart covers 1982 to 1983 model years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 2057 bulb is the most widely used type across the Dodge 400's turn signal specifications, appearing in the front turn signal for 1982 and in both rear turn signal years.
The 2057 is a dual-filament bulb operating at 12V with a high-filament draw of 26.9W and a low-filament draw of 8W, making it suitable for combined stop and tail or turn signal functions.
Both the 2057 and 2057NA share the BAY15d bayonet base, a two-pin offset base design that ensures a secure, polarity-oriented fit in the socket.
The 2057 and 2057NA are brighter variants of the 1157, meaning they share the same base and general form but produce higher light output under equivalent operating conditions.
The 2057NA specified for the 1983 Dodge 400 front turn signal carries natural amber glass, which produces an amber light output directly from the bulb rather than relying on a colored lens.
The 1983 Dodge 400 front turn signal uses the 2057NA rather than the standard 2057, meaning the two are not interchangeable in that position without accounting for the difference in glass color.
Both bulb types conform to ANSI standards recognized in the United States and Canada, indicating standardized electrical and physical tolerances.