Peterbilt 310 Courtesy Bulb Size
The Peterbilt 310 courtesy light utilizes unique bulb sizes identified as P21W, 906, 1141, and 1004. Available data for the specified components covers the range from 1986 to 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 | P21W (With 4 Rectangular Headlamps) |
| 906 (With 4 Round Headlamps) | |
| 1141 (With Halogen Capsule Headlamps) | |
| 1986 | 1141 |
| 1004 (With 4 Rectangular Headlamps) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W. | 906 |
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1141 |
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W. | 1004 |