GMC W4500 Forward Instrument Panel Bulb Size
The GMC W4500 Forward instrument panel utilizes bulb sizes 158, 161, 168, and 1893 for illumination. Data for the specified components covers the period from 1992 through 1996.
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 |
|---|---|
| 1995-1996 | 158 (Tiltmaster) |
| 1993-1994 | 168 (Tiltmaster) |
| 1992 | 161 (Medium Duty) |
| 1893 (Tiltmaster) |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3W. | 158 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W. | 168 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 1893 |