Chevrolet Celebrity Parking Light Bulb Size

Additional Notes

• The Chevrolet Celebrity parking light specifications reference three distinct bulb types across the 1982-1990 model years: the 194NA, 2057NA, and 1034NA.
• All three bulb types carry the "NA" suffix, which denotes natural amber glass. This coloring is built into the glass envelope itself rather than applied as a coating, producing the amber output required for parking light applications.
• The 194NA is a T10 miniature wedge bulb rated at 12V and 3.78W. Its wedge base requires no separate socket retainer, as the glass pinch at the base holds the bulb in place mechanically.
• The 2057NA and 1034NA both use a BAY15d bayonet base, which features two offset pins to ensure correct rotational orientation during installation. This base type is not interchangeable with the wedge fitting used by the 194NA.
• The 2057NA is a dual-filament bulb rated at 12V with a high/low filament output of 26.9W and 8W respectively. It is described as a brighter variant of the 1157, meaning it shares the same BAY15d base but draws more current on its high filament.
• The 1034NA is also a dual-filament BAY15d bulb, rated at 12V with filaments at 21W and 5W. Although it shares the same base as the 2057NA, the wattage ratings differ, and the two are not direct substitutes for one another.
• The Chevrolet Celebrity (1985, 1988, and 1990) uses the 194NA, while the 1984, 1986, and 1987 model years use the 2057NA, and the 1982 model year uses the 1034NA exclusively.
• Because the 194NA uses a wedge base and the 2057NA and 1034NA use a BAY15d bayonet base, bulbs from these two groups require different socket housings and are physically incompatible with each other's mounting positions.