Peterbilt 385 License Plate Bulb Size

The Peterbilt 385 license plate light uses bulb sizes 67 and 97 according to the provided technical specifications for the exterior lighting system. Data for the specific bulb requirements spans the range from 1995 through 2008.

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
1998-2008	67
1995-1997	67
1995-1997	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 385 uses the bulb size 67 for its license plate position across the 1995-2008 model years.
The bulb 67 is an ANSI-standard single-filament bulb rated at 12V and 8W, fitted with a BA15s bayonet base.
The bulb 97 is also an ANSI-standard single-filament bulb with a BA15s bayonet base, but it operates at a higher wattage of 13W on a 12V circuit.
Both the 67 and 97 share the same BA15s bayonet base type, which is a single-contact base commonly associated with the 1156 bulb family.
The 67 is described as a lower wattage variant of the 1156, while the 97 is described as a variant of the 1156, placing both within the same broader bulb family despite their wattage difference.
For the Peterbilt 385 model years 1995-1997, vehicles equipped with Halogen Capsule Headlamps require bulb size 97 for the license plate position rather than the standard 67.
The halogen capsule headlamp configuration represents a conditional fitment that applies only to the 1995-1997 model years, with no equivalent conditional entry present for 1998-2008.
Although the 67 and 97 share a BA15s base, the wattage difference of 5W between them means the two bulbs are not interchangeable without accounting for the electrical load difference in the circuit.