Peterbilt 349 License Plate Bulb Size

The Peterbilt 349 license plate light uses unique bulb sizes 67 and 97 for illumination. Data for the lighting components covers the range from 1986 to 1987.

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
1986-1987	67
1986-1987	97 (With Halogen Capsule Headlamps)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 8W.	67
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	97

Other Locations

Additional Notes

The Peterbilt 349 uses two distinct bulb sizes for the license plate position across the 1986-1987 model years: the 67 and the 97, with the applicable size depending on the headlamp configuration of the vehicle.
The 67 bulb is an ANSI-standard single-filament bulb rated at 12V and 8W, fitted with a BA15s bayonet base. It is classified as a lower wattage variant of the 1156 bulb family.
The 97 bulb shares the same ANSI-standard single-filament design and BA15s bayonet base as the 67, but operates at a higher wattage of 13W on a 12V system. It is also a variant of the 1156 family.
Although the 67 and 97 share the same BA15s bayonet base, their wattage ratings differ. The 67 draws 8W while the 97 draws 13W, which means the two are not interchangeable without accounting for that difference in power draw.
On the Peterbilt 349, the 97 bulb applies specifically to vehicles equipped with Halogen Capsule Headlamps, while the 67 applies to all other configurations in the same model years.
The BA15s bayonet base designation indicates a single-contact base with a 15mm collar, which is a widely used base type in automotive lighting and governs physical fitment into the socket.