The Renault Alliance front turn signal requires a 2057NA bulb size while the rear turn signal uses a 2057 bulb size. The replacement chart covers vehicle production spanning 1983 to 1987 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 Renault Alliance turn signal specifications, appearing in both the front and rear positions for the 1983-1986 model years, as well as all rear positions through 1987.
The 2057 is an ANSI-standard dual-filament bulb rated at 12V with a wattage split of 26.9W for the high-filament function and 8W for the low-filament function, making it suitable for combined turn signal and parking light duties.
Both the 2057 and 2057NA share the BAY15d bayonet base, a two-pin offset base design that physically locks the bulb into position and ensures correct filament orientation within the socket.
Both bulb types are described as brighter variants of the 1157, meaning they produce higher light output while retaining the same base configuration and dual-filament design as the 1157.
The 2057NA differs from the 2057 solely in its natural amber glass envelope, which produces an amber-colored output without the need for an amber-tinted lens or housing.
The 1987 Renault Alliance front turn signal is the only position in the specifications that calls for the 2057NA rather than the standard 2057, representing a single-year, single-position distinction within the dataset.
Because the 2057 and 2057NA share identical base types and electrical ratings, the 2057NA is physically interchangeable with the 2057, though substituting a clear-glass 2057 in a position designed for the 2057NA would alter the output color if the housing lens is also clear.