Mazda 6 Back Up Light Bulb Size
The Mazda 6 back up light bulb uses 7440 and 921 sizes depending on the vehicle configuration. The replacement chart covers 2003 through 2017 production years with corresponding bulb size specifications.
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 | US Type | EU Type | Shop |
|---|---|---|---|
| 2014-2017 | 7440 | W21W | Check Price |
| 2006-2013 | 921 | W16W | Check Price |
| 2003-2004 | 921 | W16W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Single-filament wedge bulb (T20). 12V, 21W. | 7440 | Check Price |
| ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W. | 921 | Check Price |