Dodge Aspen front turn signal bulbs utilize 1157NA or 1034NA sizes, while rear turn signal bulbs use 1157 size. The replacement chart covers 1976 through 1980 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 Aspen uses three bulb types across its front and rear turn signal positions: the 1157NA, 1034NA, and 1157, all of which conform to ANSI standards recognized in the United States and Canada.
All three bulb types share the BAY15d bayonet base, a dual-pin offset base design that physically locks the bulb into the socket at a fixed rotational position.
Each bulb type operates on a 12-volt system with a dual-filament configuration rated at 21W and 5W, where the higher wattage filament serves the active turn signal function and the lower wattage filament serves a secondary role such as parking or running light.
The 1157NA and 1034NA variants feature natural amber glass, which produces an amber-colored output without requiring an amber-tinted lens or housing.
The 1034NA is described as a variant of the 1157, sharing the same voltage and wattage ratings as well as the BAY15d base, though it carries a distinct ANSI designation.
The rear turn signal position on the Dodge Aspen uses the 1157 across all model years from 1976-1980, making it the only position with a consistent bulb specification throughout the entire production span covered.
The front turn signal position alternates between the 1157NA and the 1034NA depending on the model year, with 1034NA specified for 1976 and 1979, and 1157NA specified for 1977, 1978, and 1980.
Because the 1034NA and 1157NA share the same base type, wattage, and voltage as the standard 1157, physical fitment across these positions is technically consistent, though the amber glass coating on the NA variants distinguishes them from the clear 1157.