Oldsmobile Cutlass Ciera front turn signal bulbs use 1034NA, 2057, or 1157NA sizes, while rear turn signal bulbs use 1157 size. The replacement chart covers 1982 to 1990 production 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 Oldsmobile Cutlass Ciera uses four distinct bulb types across its front turn signal positions from 1982 to 1990: the 1034NA, 1157NA, 2057, and 1157.
All four bulb types share the BAY15d bayonet base, which is a dual-contact base with two offset pins that prevent incorrect installation orientation.
The 1034NA and 1157NA are natural amber glass variants, meaning the amber color is built into the glass envelope rather than produced by a colored lens or housing.
The 1034NA operates at 12V with a 21/5W dual-filament output, while the 1157NA operates at the same voltage but with a slightly higher 21W/5W rating, making the two bulbs electrically distinct despite their physical similarities.
The 2057, fitted to the 1987 Cutlass Ciera front turn signal, carries a high-beam filament rating of 26.9W, making it the brightest front turn signal bulb specified across all model years listed.
Because the 1034NA, 1157NA, 2057, and 1157 all share the BAY15d base, they are physically interchangeable, but their differing wattage ratings mean substitution can affect circuit load and light output.
The rear turn signal position on the Cutlass Ciera uses the 1157 across all listed model years from 1982 to 1990, with no variation in specification.
The 1157 and 1157NA share identical voltage and wattage ratings at 12V and 21W/5W, with the only difference being the amber glass coating on the 1157NA.
The front turn signal specification changed three times across the listed production span, moving from the 1034NA in 1982-1984, to the 1157NA in 1985-1986, then to the 2057 in 1987, and back to the 1034NA in 1988-1990.
All bulbs listed are ANSI standards applicable to both the United States and Canada, indicating compliance with North American automotive lighting requirements.