Mercedes-Benz 300D Automatic Transmission Indicator Bulb Size
The Mercedes-Benz 300D automatic transmission indicator utilizes 2721 and SE1274 bulb sizes for illumination. Available data for the specified components covers the range from 1977 through 1993.
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 |
|---|---|
| 1990-1993 | 2721 |
| 1977-1985 | SE1274 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 2W. | 2721 |
| Sylvania/Eiko part number. Specialty instrument panel bulb. 12V. | SE1274 |