Chevrolet C70 License Plate Bulb Size

The Chevrolet C70 license plate light requires a bulb size of 67 for proper illumination of the rear vehicle identification area. Available information covers the specific time range from 1979 through 1988.

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
1979-1988	67

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67

Other Locations

Additional Notes

The Chevrolet C70 uses the 67 bulb for its license plate position across the 1979-1988 model years.
The 67 bulb is an ANSI-standardized type recognized in both the United States and Canada, operating at 12 volts and 8 watts.
It is a single-filament bulb, meaning it serves one lighting function rather than combining two, such as stop and tail, into a single unit.
The 67 uses a BA15s bayonet base, which is a single-contact bayonet mount that locks into its socket with a twist rather than a threaded connection.
The 67 is a lower-wattage variant of the 1156 bulb. While both share the BA15s base type, the 1156 operates at a higher wattage, making the two non-interchangeable despite their physical similarity.