Ford C-Max Parking Light Bulb Size

Ford C-Max parking light bulbs utilize 3457NA and 3357NA sizes for replacement applications. The replacement chart covers 2013 to 2018 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.

Bulb Size by Year Range

Years	Bulb Size
2017-2018	3457NA
2016	3357NA
2013-2015	3457NA

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament wedge bulb (T25), natural amber glass. 12V, 27W/7W.	3457NA
ANSI standard (US & Canada). Single-filament wedge bulb (T25), natural amber glass. 12V, 27W.	3357NA

Other Locations

Additional Notes

The 3457NA bulb is a dual-filament T25 wedge type rated at 12V with a 27W high filament and a 7W low filament, conforming to ANSI standards applicable in the US and Canada.
The 3357NA bulb is a single-filament T25 wedge type rated at 12V and 27W, also conforming to ANSI standards applicable in the US and Canada.
Both bulb types feature natural amber glass, which produces an amber-tinted output without the need for an external amber lens or filter.
The Ford C-Max uses the 3457NA for the 2013-2015 and 2017-2018 model years, making it the more frequently specified of the two bulb types across this vehicle's production range.
The 2016 Ford C-Max is the sole model year specified with the 3357NA bulb, which differs from the 3457NA in filament count rather than voltage or glass type.
Although the 3457NA and 3357NA share the same T25 wedge base and natural amber glass, the 3457NA carries a second 7W filament that the 3357NA does not, making the two bulbs non-interchangeable without accounting for that functional difference.
The dual-filament design of the 3457NA allows it to serve two separate lighting functions within a single housing, a characteristic relevant to how the parking light circuit is wired in the years that specify it.
The shared T25 wedge base across both bulb types means physical installation is the same, but the internal wiring of the socket determines which filament or filaments are activated.