Peterbilt 367 Back Up Light Bulb Size

The Peterbilt 367 back up light requires 1156 and P21W bulb sizes for the lighting components. Data for the specific bulbs covers the period from 2008 through 2015.

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
2008-2015	1156

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156

Other Locations

Additional Notes

The Peterbilt 367 uses the 1156 bulb for the back up light across all listed model years, spanning 2008-2015.
The 1156 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American standard applicable in both the United States and Canada.
The 1156 operates on a 12-volt electrical system and draws 21 watts, which is typical of incandescent automotive bulbs used in signaling and reversing light applications.
The 1156 is a single-filament bulb, meaning it serves one lighting function only, which is consistent with its role as a dedicated back up light.
The 1156 uses a BA15s bayonet base, a single-contact bayonet mount that locks into the socket with a quarter-turn motion.
The BA15s base designation indicates a single-contact configuration, distinguishing it from the BA15d base, which carries two contacts and is not interchangeable with the BA15s.
Because the 1156 and the visually similar 1157 share the same bayonet base housing but differ in filament count and contact configuration, the 1157 is not a compatible substitute in a BA15s socket.