Chrysler Cordoba front and rear turn signal bulbs utilize sizes 2057NA, 1157, 1034NA, and 1156 depending on location and model variation. The replacement chart covers 1975 through 1983 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 1157 bulb is the most consistently used type across the Chrysler Cordoba's turn signal specifications, appearing in the rear turn signal position for every model year from 1975-1983, with the sole exception of 1977.
The 1157 is a dual-filament bulb operating at 12V with a 21W high filament and 5W low filament, fitted with a BAY15d bayonet base, which allows it to serve both turn signal and running light functions within a single housing.
The front turn signal positions across the 1975-1983 Cordoba use four distinct bulb types: 1034NA, 1157NA, 1157, and 2057NA, none of which are interchangeable without consideration of their differing wattage and glass coating characteristics.
The 2057NA, used in the front turn signal position on the 1982-1983 Cordoba, draws 26.9W on its high filament, making it noticeably brighter than the 1157 and 1157NA types rated at 21W on their high filaments.
The "NA" suffix on bulb designations such as 1034NA, 1157NA, and 2057NA indicates natural amber glass, meaning the amber color is produced by the glass envelope itself rather than by an amber-tinted lens in the vehicle's housing.
The 1034NA, specified for the front turn signal on the 1975, 1978, and 1980 Cordoba, shares the same 12V and 21W/5W ratings as the 1157NA but is classified as a distinct variant under ANSI standards, and the two are not listed as direct substitutes.
The 1977 Cordoba rear turn signal is the only model year in the specifications to use the 1156 bulb, which is a single-filament type with a BA15s bayonet base operating at 12V and 21W, distinguishing it from the dual-filament 1157 used in all other rear turn signal positions.
Because the 1156 uses a BA15s base and the 1157 uses a BAY15d base, these two bulbs are physically non-interchangeable despite sharing a similar external profile, making the 1977 rear turn signal socket incompatible with the 1157 used in surrounding model years.
All five bulb types referenced in the Cordoba's turn signal specifications conform to ANSI standards recognized in both the United States and Canada, indicating consistent regulatory compliance across the production run.
The BAY15d bayonet base, shared by the 1157, 1157NA, 1034NA, and 2057NA, features two offset pins that prevent incorrect single-filament bulbs from being seated in dual-filament sockets, a design characteristic relevant to fitment accuracy across the majority of Cordoba turn signal positions.