Mercedes-Benz S550 Turn Signal Bulb Size

The Mercedes-Benz S550 front turn signal requires a PY24WNA bulb size while the rear turn signal uses a 12271NA bulb size. The replacement chart covers 2007 to 2013 model 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.

Front Turn Signal

YearsBulb Size
2007-2013PY24WNA

Rear Turn Signal

YearsBulb Size
2007-200812271NA

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Amber variant of ECE PY24W with PGU20-4 base. 12V, 24W.PY24WNA
OEM part number. Natural amber glass variant. 12V.12271NA

Other Locations

Additional Notes