Chevrolet Beretta Parking Light Bulb Size

The Chevrolet Beretta parking light requires bulb sizes 2057NA, 194NA, or 2057 depending on the specific version. Available data for the bulb sizes covers the range from 1987 to 1994.

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
1991-1994	2057NA
1990	194NA
1987-1989	2057

Bulb Specifications

Description	Bulb Size
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). Miniature wedge bulb (T10), natural amber glass. 12V, 3.78W.	194NA
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 2057 bulb is a dual-filament type with a BAY15d bayonet base, rated at 12V with a high filament draw of 26.9W and a low filament draw of 8W. It is designated as a brighter variant of the 1157 bulb.
The 2057NA shares the same electrical ratings, base type, and dual-filament construction as the 2057, differing only in its natural amber glass envelope, which produces an amber output without a separate lens or coating.
The Chevrolet Beretta used the 2057 bulb for parking lights across the 1987-1989 model years, then transitioned to the 2057NA for the 1991-1994 model years.
The 2057 and 2057NA are electrically and physically interchangeable due to their identical BAY15d base and matching voltage and wattage ratings. However, substituting a 2057 for a 2057NA would result in a clear rather than amber light output.
The 1990 Chevrolet Beretta uses a substantially different bulb for the parking light position. The 194NA is a miniature wedge-base T10 bulb rated at 12V and 3.78W, a single-filament type with no bayonet base, making it physically and electrically incompatible with the 2057-series bulbs used in surrounding model years.
The low wattage of the 194NA at 3.78W contrasts sharply with the 8W low-filament rating of the 2057NA, reflecting a significant difference in light output between the 1990 fitment and those of adjacent years.
All three bulb types listed carry ANSI standard designation applicable to both the United States and Canada, indicating conformance to a shared North American specification.
The BAY15d base used by both the 2057 and 2057NA is an offset dual-contact bayonet fitting, a design that prevents incorrect single-filament bulbs from being seated in a dual-filament socket.