The Ford E-450 Super Duty brake light utilizes 3157, 3357, and 3457 bulb sizes depending on the specific version required for the vehicle. Available data for the lighting components spans a time range from 2003 through 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford E-450 Super Duty brake light circuit draws from three distinct bulb types across its model history: the 3157, 3457, and 3357, all of which conform to ANSI standards recognized in the United States and Canada.
The 3157 and 3457 are both dual-filament T25 wedge bulbs rated at 12V with a 27W high filament and a 7W low filament, meaning they support two independent brightness levels within a single housing, a design suited to combined stop and tail light functions.
The 3357 is a single-filament T25 wedge bulb rated at 12V and 27W, which means it operates at one fixed output level rather than switching between two, distinguishing it functionally from the 3157 and 3457 despite sharing the same T25 form factor.
Because the 3157, 3357, and 3457 all share the T25 wedge base, physical installation across these types is possible, but substituting a single-filament 3357 where a dual-filament 3157 or 3457 is specified would result in the loss of one lighting function.
The Ford E-450 Super Duty uses the 3157 for brake lights across the 2015-2023 model years, with the exception of 2020, and also used it for the 2000-2003 model years.
The 3457 was specified for the 2011-2012 and 2014 model years, while the 3357 was used across the 2004-2010 and 2013 model years, indicating that the brake light position on this vehicle has seen three different bulb specifications over its production span.
The center high mount stop light on the Ford E-450 Super Duty uses the 912 bulb consistently across the 2000-2019 model years.
The 912 is a T15 wedge bulb rated at 12V and 12W, operating as a single-output light source. It is classified as a variant of the 921 bulb, which shares the same base but is rated at a higher wattage of 16.8W.
The T15 form factor of the 912 is physically smaller than the T25 used by the brake light bulbs, meaning the two positions are not interchangeable by size or socket type.
Fitment of the 3457 in place of the 3157 is generally considered electrically compatible given that both are dual-filament T25 bulbs with identical voltage and wattage ratings, though the 3457 features a different contact configuration that may affect socket fit depending on the specific housing design.