Chevrolet El Camino Parking Light Bulb Size

The Chevrolet El Camino parking light utilizes unique bulb sizes 194NA, 2057NA, 1157NA, 1157, and 1034 depending on the specific vehicle configuration. Available data for the lighting components covers the range from 1959 through 1987.

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
1986-1987	194NA
1985	2057NA
1984	194NA
1983	2057NA
1980-1982	1157NA
1973-1979	1157
1972	1157NA
1964-1971	1157
1959-1960	1034

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10), natural amber glass. 12V, 3.78W.	194NA
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. Brighter variant of 1157. 12V, 26.9W/8W.	2057NA
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base, natural amber glass. 12V, 21W/5W.	1157NA
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 El Camino parking light specifications span model years 1959 through 1987, covering 26 individual year entries across that range.
The 1157 bulb is the most frequently specified type across the El Camino lineup, appearing in model years 1964-1971 and 1973-1979. It is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 21W/5W, and meets the ANSI standard for the US and Canada.
The "NA" suffix on bulb designations such as 1157NA, 2057NA, and 194NA indicates natural amber glass, meaning the amber color is built into the glass itself rather than produced by a colored lens or housing.
The 1157NA shares the same BAY15d bayonet base and 12V/21W/5W electrical rating as the standard 1157, differing only in its natural amber glass construction. It is specified for the 1972, 1980-1982 model years.
The 2057NA, specified for the Chevrolet El Camino in 1983 and 1985, is a brighter variant of the 1157 family. It uses the same BAY15d bayonet base but draws significantly more power on its high-filament circuit at 26.9W compared to the 1157's 21W.
Despite sharing the BAY15d bayonet base with the 1157 and 2057 families, the 2057NA's higher wattage output means it is not a straightforward drop-in substitute in sockets or circuits designed around the lower-wattage 1157 specification.
The 194NA, specified for 1984 and 1986-1987, is a T10 miniature wedge bulb, a physically distinct form factor from the BAY15d bayonet-base bulbs used in all other El Camino model years listed. It is single-filament, rated at 12V and 3.78W.
The 194NA's wedge base is mechanically incompatible with the BAY15d bayonet sockets used by the 1157, 1157NA, 2057NA, and 1034 bulbs, making cross-substitution between these groups impossible without socket modification.
The 1034 bulb, specified for the 1959-1960 model years, uses a BAY15d bayonet base and carries a 12V/21W/5W dual-filament rating, placing it in the same general family as the 1157. It is described as a variant of the 1157.
The 1984 model year represents a notable fitment shift, with the 194NA wedge bulb specified between years that used BAY15d bayonet-base bulbs, indicating that socket type varied across production years and direct year-to-year interchangeability cannot be assumed.