Mercedes-Benz CLS63 AMG Turn Signal Bulb Size

The Mercedes-Benz CLS63 AMG front turn signal uses a 3457NA bulb size for replacement applications. The replacement chart covers vehicle production spanning 2007 to 2011 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.

Front Turn Signal

Years	Bulb Size
2007-2011	3457NA

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.	3457NA

Other Locations

Additional Notes

The Mercedes-Benz CLS63 AMG uses the 3457NA bulb for the front turn signal across the 2007-2011 model years.
The 3457NA is an ANSI-standardized bulb type, meaning its physical and electrical specifications conform to a defined North American standard used in the United States and Canada.
This bulb is a dual-filament type, operating at 27W on the higher-intensity filament and 7W on the lower-intensity filament, which allows it to serve two lighting functions within a single housing.
The 3457NA operates on a 12V electrical system, consistent with standard automotive voltage.
The "NA" suffix in the 3457NA designation indicates natural amber glass, meaning the amber color is built into the glass envelope rather than achieved through a clear bulb in a colored lens.
The T25 designation refers to the bulb's wedge-base form factor, a common automotive base type used across a range of vehicle makes and models.
Because the amber tint is integral to the glass of the 3457NA, substituting a clear-glass equivalent such as the 3457 would alter the color output of the front turn signal and may not meet regulatory requirements for amber turn signal lighting.