Ford E-350 Super Duty Turn Signal Bulb Size

The Ford E-350 Super Duty uses front turn signal bulbs in sizes 3157, 3157NA, and 4157, along with rear turn signal bulbs in sizes 3157, 3357, and 2456, with bulb size varying by model year. The replacement chart covers vehicle production years spanning 1999 through 2023.

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
2021-20233157
2008-20193157NA (With Halogen Capsule Headlamps)
4157 (With Sealed Beam Headlamps)
2004-20073157
1999-20033157NA

Rear Turn Signal

YearsBulb Size
2021-20233157
20193157 (With Halogen Capsule Headlamps)
2017-20183357
2015-20163157
2004-20143357
2002-20032456
20012356
20002456
19992356

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.3157
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.3157NA
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.4157
ANSI standard (US & Canada). Single-filament wedge bulb (T25). 12V, 27W.3357
ANSI standard (US & Canada). Festoon bulb, specialty application. 12V.2456
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V.2356

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