Chevrolet Astro Turn Signal Bulb Size

Chevrolet Astro front and rear turn signal bulbs utilize 3157NA and 2057 bulb sizes respectively. The replacement chart covers 1985 to 2005 vehicle 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.

Front Turn Signal

YearsBulb Size
1995-20053157NA
1985-19942057

Rear Turn Signal

YearsBulb Size
1985-20052057

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.3157NA
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W.2057

Other Locations

Additional Notes