The Ford Expedition brake light utilizes unique bulb sizes 3057, 2458, 3157, and 4157 across various production versions. Available data covers the specific range from 1997 through 2023.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Expedition brake light specifications reference three bulb types across the 3057, 3157, and 4157 designations. All three are ANSI-standard dual-filament wedge bulbs in the T25 form factor, rated at 12V with a 27W/7W filament configuration, where the higher wattage filament serves the brake function and the lower serves the running light function.
Although the 3057, 3157, and 4157 share identical voltage and wattage ratings within the T25 form factor, they are distinct part numbers and are not confirmed as interchangeable within these specifications. Substituting one for another without verifying socket and filament polarity compatibility carries fitment risk.
The Ford Expedition (2019-2020) carries a conditional fitment note specifying the 3057 bulb applies only to trims equipped with Halogen Capsule Headlamps, indicating that headlamp technology on those model years is associated with brake bulb selection.
The 2018 Ford Expedition similarly carries the Halogen Capsule Headlamps condition, though it specifies the 3157 rather than the 3057, marking 2018 as a transitional year between the two bulb designations in the brake light position.
The center high mount stop light on the Ford Expedition uses three distinct bulb types across its production span. The 912 wedge bulb (T15) was used in 1997-2002, the 168 miniature wedge (T10) in 2003-2006, and the 12961 miniature wedge (T10) in 2007-2018.
The 12961 is a Philips part number rather than an ANSI standard designation. It uses a W2.1x9.5d base in a T10 form factor, rated at 12V and 5W, and is the bulb specified for the center high mount stop light across the longest consecutive span in these specifications, covering 2007-2018.
The 168 bulb is an ANSI-standard T10 miniature wedge rated at 12V and 4.9W, making it functionally close to the 12961 in wattage. However, the base designation differs between the two, and the specifications treat them as separate fitments for different model years rather than interchangeable units.
The 912 bulb is an ANSI-standard T15 wedge rated at 12V and 12W, classified as a variant of the 921. Its wattage is notably higher than both the 168 and 12961, reflecting a different lamp design used in the center high mount stop light position during the earlier 1997-2002 production years.
The brake light position on the Ford Expedition transitioned from the 3157 (1997-2005) to the 4157 (2006-2012), then back to the 3157 (2013-2017), and subsequently to the 3057 (2018-2023), with conditional headlamp-based fitment notes appearing in 2018-2020.
No center high mount stop light bulb is listed in these specifications for the 2019-2023 model years, and the brake light position carries no center high mount stop light entry beyond 2018, consistent with a transition to non-replaceable LED assemblies in later production years, though the specifications themselves do not state this explicitly.