Peterbilt 378 Tail Light Bulb Size
The Peterbilt 378 tail light utilizes 2057 and 198 bulb sizes for the lighting components. Available information covers the range of 1988 through 2007 for the specified vehicle and lighting equipment.
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 |
|---|---|
| 1998-2007 | 2057 |
| 1997 | 2057 |
| 198 (With Halogen Capsule Headlamps) | |
| 1996 | 2057 |
| 1995 | 2057 |
| 198 (With 4 Round Headlamps) | |
| 1994 | 198 |
| 2057 (With 4 Round Headlamps) | |
| 1993 | 2057 |
| 1991-1992 | 2057 |
| 198 (With Halogen Capsule Headlamps) | |
| 1990 | 198 |
| 2057 (With 4 Round Headlamps) | |
| 1989 | 198 |
| 2057 (With 4 Rectangular Headlamps) | |
| 1988 | 2057 |
| 198 (With 4 Round Headlamps) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Brighter variant of 1157. 12V, 26.9W/8W. | 2057 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 198 |