Chevrolet C50 Parking Light Bulb Size

The Chevrolet C50 parking light utilizes 1157 and 2057 bulb sizes for the lighting components. Available information covers the range of years from 1960 through 1988 for the specified vehicle.

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
1984-1988	1157
1983	2057
1960-1982	1157

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. Brighter variant of 1157. 12V, 26.9W/8W.	2057

Other Locations

Additional Notes

The 1157 bulb is the dominant parking light specification for the Chevrolet C50, covering model years 1960-1982 and 1984-1988.
The 1157 is a dual-filament bulb operating at 12 volts with a 21W high filament and a 5W low filament, mounted on a BAY15d bayonet base, and rated under ANSI standards applicable in the US and Canada.
The 2057 bulb is specified for the 1983 Chevrolet C50, making it the sole exception across the entire model year range covered by these specifications.
The 2057 shares the same BAY15d bayonet base and dual-filament 12-volt design as the 1157, but draws more power at 26.9W and 8W across its two filaments respectively.
Because the 1157 and 2057 share the same BAY15d bayonet base, the 2057 is physically interchangeable with the 1157 in terms of socket fitment, though the two bulbs differ in wattage output.
The higher wattage of the 2057 relative to the 1157 means substituting one for the other in the 1983 model year may affect the electrical load on the parking light circuit.