Mercedes-Benz 350SL Turn Signal Bulb Size

The Mercedes-Benz 350SL uses a P21W bulb size for the rear turn signal, with this specification applying to the vehicle's production during the early 1970s. The replacement chart covers 1972 to 1973 model years and documents the bulb specifications for that period.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Rear Turn Signal

YearsUS TypeEU TypeShop
1972-19731156P21WCheck Price

Bulb Specifications

Description Type Shop
ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W.P21WCheck Price
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.1156Check Price

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