Mack CM Engine Compartment Light Bulb Size
The Mack CM engine compartment light utilizes a 912 bulb size for illumination within the motor area. Data for 912 bulbs covers the range from 1988 through 1991.
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 |
|---|---|
| 1988-1991 | 912 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W. | 912 |