Peterbilt 376 License Plate Bulb Size

The Peterbilt 376 license plate light uses bulb sizes 67 and 97 for the rear illumination components. Available data for the specified vehicle covers the range from 1988 through 1999.

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
1999	67
1994-1996	67
1994-1996	97 (With Halogen Capsule Headlamps)
1988-1992	67
1988-1992	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 376 license plate position uses two distinct bulb sizes across its model years: the 67 and the 97, both of which conform to ANSI standards recognized in the United States and Canada.
Both the 67 and the 97 are single-filament bulbs sharing the BA15s bayonet base, which is a single-contact base with a 15mm barrel. Despite this shared base type, the two bulbs are not interchangeable due to differences in wattage output.
The 67 bulb operates at 12V and 8W, making it the lower-output of the two. The 97 bulb operates at 12V and 13W, drawing notably more current for the same 12-volt supply. Both are variants of the 1156 bulb family.
The Peterbilt 376 requires the 97 bulb specifically on vehicles equipped with Halogen Capsule Headlamps. Units without that headlamp configuration use the 67 bulb instead.
The dual-bulb fitment structure, where both the 67 and the 97 are listed for the same model year, applies to the 1988-1992 and 1994-1996 model years. The 1999 model year lists only the 67 bulb for the license plate position.
Because the 67 and 97 share the BA15s bayonet base, physical installation in the socket is mechanically possible with either bulb. The wattage difference, however, means substituting one for the other would alter the electrical load on the circuit relative to the vehicle's original specification.