Chevrolet Chevy II Parking Light Bulb Size

The Chevrolet Chevy II parking light utilizes 1157 and 1034 bulb sizes depending on the specific version of the vehicle. Available information covers a span from 1962 through 1968.

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
1964-1968	1157
1962-1963	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 Chevy II uses two bulb types across its 1962-1968 model years for the parking light position: the 1034 and the 1157.
Both the 1034 and 1157 are ANSI-standardized bulbs recognized in the United States and Canada.
The 1157 is a dual-filament bulb operating at 12 volts with a 21W/5W output, mounted on a BAY15d bayonet base.
The BAY15d base is an offset twin-pin bayonet fitting, a design that physically prevents incorrect single-filament bulbs from being seated in the socket.
The dual-filament configuration of the 1157 allows a single bulb to serve two brightness levels, which is typical for combined parking and stop light functions.
The 1034 shares the same BAY15d bayonet base and 12V, 21/5W electrical ratings as the 1157, and the specifications describe it as a variant of that bulb.
The 1964-1968 Chevy II uses the 1157 for the parking light, while the 1962-1963 Chevy II uses the 1034.
Although the 1034 and 1157 share the same base type and wattage ratings, they are distinct ANSI part numbers, and fitment interchangeability between the two is not confirmed by these specifications.