Chevrolet Cavalier Parking Light Bulb Size

Additional Notes

• The Chevrolet Cavalier parking light specifications cover model years 1982 through 2005, with six distinct bulb types used across that span: 3457, 3357, 2357NA, 2057NA, 2057, and 1034NA.
• The 3457 is a dual-filament wedge bulb in the T25 form factor, rated at 12V with a 27W high filament and 7W low filament. It fits the Cavalier for model years 2003-2005.
• The 3357, used in the 2000-2002 Cavalier, shares the same T25 wedge form factor as the 3457 but carries only a single filament rated at 27W. Because the 3357 lacks a second filament, it is not a direct substitute for the dual-filament 3457.
• The 2057 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 26.9W/8W. It is described as a brighter variant of the 1157 and was the parking light bulb for the Cavalier across model years 1984-1990.
• The BAY15d bayonet base uses two offset pins at different heights to ensure correct polarity orientation during installation, which prevents the high and low filaments from being connected to the wrong circuit.
• The 2057NA used in the 1983, 1991-1992, and 1993-1994 Cavalier shares the same 12V and 26.9W/8W ratings as the 2057 but features natural amber glass rather than a clear envelope. This amber tint is built into the glass itself rather than applied as a coating.
• The 1034NA, specified for the 1982 Chevrolet Cavalier, also carries a BAY15d bayonet base and natural amber glass but is rated at a lower 21W/5W output, making it a lower-wattage variant compared to the 2057-series bulbs used in later years.
• Although the 2057 and 2357NA share the same BAY15d base and identical wattage ratings of 26.9W/8W, the 2357NA adds the natural amber glass of the NA designation. The two types are not interchangeable where amber output is a regulatory or design requirement.
• All six bulb types listed in these specifications conform to ANSI standards applicable in both the United States and Canada, meaning their electrical and photometric characteristics follow a shared North American standardization framework.
• The shift from BAY15d bayonet-base bulbs to T25 wedge-base bulbs in the Cavalier's parking light circuit represents a change in the physical mounting and connection method, as wedge bulbs rely on spring-tension contacts rather than a twist-lock bayonet mechanism.