Peterbilt 310 License Plate Bulb Size

The Peterbilt 310 license plate light uses 67 and 97 bulb sizes for the exterior lighting system. Available data for the specified vehicle 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 310 uses two different license plate bulb sizes across the 1986-1987 model years, with the correct fitment depending on the headlamp configuration of the vehicle.
The bulb 67 is an ANSI-standard single-filament bulb rated at 12V and 8W, fitted with a BA15s bayonet base, and is classified as a lower wattage variant of the 1156 bulb type.
The bulb 97 shares the same ANSI-standard single-filament design and BA15s bayonet base as the 67, but draws more power at 13W on a 12V system, and is also noted as a variant of the 1156.
Both the 67 and 97 use the BA15s bayonet base, meaning the physical mounting interface is identical between the two bulbs, though their wattage ratings differ.
On the Peterbilt 310, vehicles equipped with Halogen Capsule Headlamps take the 97 bulb for the license plate position, while those without that headlamp configuration take the 67.
The shared BA15s base between the 67 and 97 could allow one to be physically installed in place of the other, but the wattage difference means they are not electrically interchangeable without consideration of the circuit's design requirements.