The Ford F-450 Super Duty brake component utilizes unique bulb sizes 3157, 3357, 2458, and 4157 depending on the specific version. Available data covers the range from 1999 through 2022.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 3157 bulb is the dominant brake light specification for the Ford F-450 Super Duty, covering model years 1999-2022 with the exception of 2006 and 2021. It is a dual-filament T25 wedge bulb rated at 12V with a 27W high filament and a 7W low filament, the latter typically serving a parking or running light function within the same housing.
The 2021 Ford F-450 Super Duty brake light specification calls for a 3357 bulb rather than the 3157 used in surrounding years. The 3357 is a single-filament T25 wedge bulb rated at 12V and 27W, meaning it does not carry a secondary low-wattage filament.
The 3157 and 3357 share the same T25 wedge base and identical physical housing, which means a 3357 can physically seat in a 3157 socket. However, substituting a single-filament 3357 into a dual-filament 3157 application results in the loss of the secondary filament circuit, which may affect parking or running light functionality depending on the circuit design.
The 2006 Ford F-450 Super Duty brake light specification lists the 4157 bulb. Like the 3157, the 4157 is a dual-filament T25 wedge bulb rated at 12V, 27W/7W. The 4157 differs from the 3157 in that it incorporates a built-in fuse element within the bulb, a feature intended to protect the circuit in the event of a filament failure.
For model years 2017-2019, the brake light specification of 3157 carries the conditional notation "With Halogen Capsule Headlamps," indicating that this fitment applies specifically to vehicles equipped with that headlamp configuration.
The center high mount stop light (CHMSL) specification transitions from the 922 bulb to the 912 bulb between the 2010 and 2011 model years. Both are T15 wedge bulbs operating at 12V, but the 922 is rated at 16W while the 912 is rated at 12W, making them non-equivalent in wattage despite sharing a compatible base form.
The 912 bulb used in the CHMSL from 2011 onward is classified as a variant of the 921 bulb. The 921 is rated at 12V and 18W, while the 912 operates at 12W, placing it at a lower wattage within the same T15 wedge family.
The 2019 CHMSL specification carries the same "With Halogen Capsule Headlamps" conditional notation seen in the brake light data for that year, while the 2020 model year has no corresponding CHMSL entry in the specifications.
All five bulb types listed across both brake light positions follow ANSI standards applicable to the United States and Canada, indicating standardized electrical and physical tolerances across the range.
The T25 designation shared by the 3157, 3357, and 4157 refers to the bulb's tubular glass envelope width, while the T15 designation of the 912 and 922 indicates a narrower envelope, reflecting the physically smaller form factor of the CHMSL application relative to the main brake light position.