Kenworth K100 Tail Light Bulb Size

The Kenworth K100 tail light requires bulb size 1156 or P21W depending on the specific configuration of the lighting assembly. Data for the bulb requirements covers the range from 1981 to 1985.

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

YearsBulb Size
1981-19851156

Bulb Specifications

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

Other Locations