Peterbilt 349 Courtesy Bulb Size
The Peterbilt 349 courtesy light utilizes 1141, P21W, and 1004 bulb sizes to provide illumination for the interior cabin area. Data for the specific lighting components covers the period from 1986 through 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 |
|---|---|
| 1987 | 1141 |
| P21W (With Halogen Capsule Headlamps) | |
| 1986 | 1004 |
| 1141 (With 4 Round Headlamps) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1141 |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1004 |