Chevrolet Corvair Parking Light Bulb Size

The Chevrolet Corvair parking light utilizes 1157 and 1034 bulb sizes depending on the specific production period for the vehicle. Available data covers the span from 1960 through 1969.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1965-1969	1157
1960-1964	1034

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1034

Other Locations

Additional Notes

The Chevrolet Corvair uses two distinct parking light bulb sizes across its production run, with the 1034 fitted to 1960-1964 models and the 1157 fitted to 1965-1969 models.
Both the 1034 and 1157 are ANSI-standardized bulbs recognized in the United States and Canada, meaning they conform to defined performance and dimensional standards within those markets.
Each bulb type carries a dual-filament design, which allows a single bulb to serve two separate lighting functions at different brightness levels within the same housing.
Both types use the BAY15d bayonet base, a two-pin offset base where the two pins are positioned at different heights to ensure correct orientation during installation.
Both bulbs operate on a 12-volt electrical system and share a 21W/5W power rating, with the higher wattage filament serving the brighter function and the lower wattage filament serving the dimmer function.
The 1034 is classified as a variant of the 1157, indicating a close relationship between the two types despite their different ANSI designations.
Because the 1034 and 1157 are distinct ANSI designations, substituting one for the other without confirming compatibility with the specific model year is not supported by these specifications.
The shared BAY15d base between the 1034 and 1157 means the physical base interface is the same, though base compatibility alone does not confirm that one bulb is a direct replacement for the other.