Ford Transit Turn Signal Bulb Size

Ford Transit front inner and front turn signal bulbs utilize 3457NA size, while rear turn signal bulbs use PY21W or 3057 size. The replacement chart covers vehicle production years spanning 2015 to 2023 with corresponding bulb specifications.

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

Front Inner Turn Signal

YearsBulb Size
2015-20203457NA

Front Turn Signal

YearsBulb Size
20233457NA
20203457NA
2017-20183457NA
2015-201612961 (Mirror)

Rear Turn Signal

YearsBulb Size
2023PY21W
2015-20203057

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.3457NA
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.12961
ECE standard (Europe & worldwide). Single-filament amber bulb with BAU15s bayonet base. 12V, 21W.PY21W
ANSI standard (US & Canada). Dual-filament wedge bulb (T25). 12V, 27W/7W.3057

Other Locations

Additional Notes