Chevrolet Monte Carlo License Plate Bulb Size

Additional Notes

• The Chevrolet Monte Carlo license plate bulb specifications span model years 1970 through 2007, with four distinct bulb types represented across that range: the 194, 168, 97, and 67.
• The 194 is the most frequently specified bulb across the Monte Carlo lineup, appearing in model years 1976, 1978-1988, 1995, and 2000-2007. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 3.78W.
• The 168 bulb shares the same T10 miniature wedge form factor as the 194 but draws more power at 4.9W versus 3.78W. It is specified for the 1974-1975, 1977, and 1996-1999 model years.
• Because the 194 and 168 share the same T10 wedge base, they are physically interchangeable in terms of socket fitment, though their wattage ratings differ. Substituting one for the other may affect brightness output.
• The 1971-1973 Monte Carlo uses the 97 bulb, an ANSI-standard single-filament type with a BA15s bayonet base rated at 12V and 13W. This bulb is described as a variant of the 1156.
• The 1970 Monte Carlo uses the 67 bulb, also a single-filament BA15s bayonet-base type, rated at 12V and 8W. It is a lower-wattage variant of the 1156 and shares its base configuration with the 97.
• The BA15s bayonet base used by both the 97 and 67 bulbs is mechanically distinct from the T10 wedge base used by the 194 and 168. These two base types are not interchangeable.
• The 1975 and 1976 model years use different bulbs from one another, with 1975 specifying the 168 and 1976 specifying the 194, despite both being adjacent model years within the same generation.
• The 1977 model year specifies the 168, while the surrounding years 1976 and 1978 both specify the 194, making 1977 an isolated exception within that production era.
• All four bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada, indicating consistent regulatory compliance across the full model year range.