Oldsmobile Silhouette front and rear side marker bulbs utilize 194 and 3057 bulb sizes, with front markers requiring 194 or 194NA bulbs and rear markers using either 3057 or 194 bulbs. The replacement chart covers 1990 to 2004 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Oldsmobile Silhouette uses two bulb types for its front side markers across its production run: the 194 and the 194NA. Both are T10 miniature wedge bulbs rated at 12V and 3.78W, conforming to ANSI standards for the US and Canadian markets.
The 194NA is a variant of the standard 194 bulb, distinguished by its natural amber glass construction. This amber tinting is built into the glass itself rather than applied as a coating, which affects the color output of the light.
The Oldsmobile Silhouette front side markers for model years 1990-1994 use the 194NA bulb, while the 1996-2004 model years use the standard 194 bulb.
The 1995 front side marker represents a transitional point in the specifications, as it is the last model year listed with the 194NA before the standard 194 takes over from 1996 onward.
Because the 194 and 194NA share the same T10 wedge base, voltage, and wattage, they are physically interchangeable. However, substituting a clear 194 for a 194NA in applications requiring amber output would alter the color of the emitted light.
The rear side marker on the Oldsmobile Silhouette uses the 3057 bulb for model years 1997-2004. This is a dual-filament T25 wedge bulb rated at 12V with a 27W high filament and a 7W low filament, also conforming to ANSI standards.
The rear side markers for the 1995-1996 Silhouette use the 194 bulb, a single-filament T10 wedge type, rather than the dual-filament 3057 used in later years. These two bulb types are not interchangeable due to differences in base size, wattage, and filament configuration.
The 3057 rear side marker bulb operates at significantly higher wattage than the 194 front side marker bulb. The 3057 draws 27W on its primary filament compared to the 3.78W of the 194, reflecting a fundamental difference in the functional role and housing design between the two positions.