Ford F-600 Super Duty Turn Signal Bulb Size

The Ford F-600 Super Duty uses 7444NA bulb size for front turn signals and 4257NA bulb size for rear turn signals. The replacement chart covers 2020 through 2022 vehicle 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.

Front Turn Signal

YearsUS TypeEU TypeShop
2021-20227444NAWY21/5WCheck Price

Rear Turn Signal

YearsUS TypeEU TypeShop
2020-20224257NAPY27/7WCheck Price

Bulb Specifications

Description Type Shop
ANSI standard (US & Canada). Dual-filament wedge bulb (T20), natural amber glass. 12V, 21W/5W.7444NACheck Price
ANSI standard (US & Canada). Dual-filament wedge bulb, natural amber glass. 12V.4257NACheck Price

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