Chevrolet Chevy II License Plate Bulb Size

The Chevrolet Chevy II license plate light uses bulb sizes 67 and 1155 according to the provided specifications. Data for the listed components spans the period from 1962 through 1968.

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 Type	Shop
1968	67	Check Price
1964-1967	1155	Check Price
1962-1963	67	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67	Check Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 21W.	1155	Check Price

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Additional Notes

The Chevrolet Chevy II license plate bulb specifications reference two ANSI-standard bulb types: the 67 and the 1155. Both are single-filament bulbs rated at 12 volts and share the BA15s bayonet base, making them physically similar in mounting style.
Despite sharing the same BA15s base, the 67 and 1155 differ significantly in wattage. The 67 operates at 8 watts, while the 1155 operates at 21 watts, meaning the two types are not electrically interchangeable even though their base configuration matches.
Both the 67 and the 1155 are described as variants of the widely used 1156 bulb type. The 67 is the lower-wattage variant, and the 1155 sits closer to the 1156 in output given its higher wattage rating.
The Chevrolet Chevy II used the 1155 bulb for its license plate lamp across the 1964-1967 model years, representing the longer of the two fitment periods covered in these specifications.
The 67 bulb was specified for the Chevy II in 1962, 1963, and 1968. These years are non-consecutive, indicating the 1155 was used in the intervening model years rather than the 67.
The BA15s bayonet base is a single-contact base, distinguished from the BA15d double-contact base. The single-contact design is standard for single-filament applications such as license plate illumination.
The wattage difference between the 67 and the 1155 is relevant to socket and wiring compatibility. Substituting a 21-watt bulb in a socket rated for an 8-watt application, or vice versa, risks improper function or electrical stress on the circuit.
Both bulb types conform to ANSI standards applicable in the United States and Canada, indicating standardized dimensional and electrical tolerances across manufacturers producing these types.