The Jeep Wrangler brake component utilizes unique bulb sizes 7440, 3157, 2458, 1157, and 2057 depending on the specific production version. Available data covers the range from 1987 through 2024.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 3157 is the most frequently specified brake bulb across the Jeep Wrangler's history, covering model years 2007-2018, with a conditional fitment note extending its use into 2019 and 2020 on trims equipped with halogen capsule headlamps. It is a dual-filament T25 wedge bulb rated at 12V with a high-beam draw of 27W and a low-beam draw of 7W, conforming to ANSI standards for the US and Canadian markets.
The 2024 Jeep Wrangler brake light specification shifts to the 7440, a single-filament T20 wedge bulb rated at 12V and 21W. Unlike the 3157 it replaces, the 7440 carries only one filament, which reflects a change in the circuit design of the brake light assembly for that model year.
The 1157 and 2057 are both dual-filament bulbs sharing the BAY15d bayonet base, meaning they are physically similar in mounting style. The 2057 is specified as a brighter variant, rated at 26.9W/8W compared to the 1157's 21W/5W output, though both operate at 12V.
Despite sharing the same BAY15d bayonet base, the 1157 and 2057 are not interchangeable without consideration of wattage differences. Substituting one for the other may affect brightness output, and compatibility with the vehicle's socket and circuit should be confirmed against the year-specific specification.
The Wrangler's brake bulb specification changed from the 2057 (2000-2004) to the 1157 (2005-2006) before transitioning to the 3157 starting in 2007. Each of these bulbs uses a different base type or filament configuration, so fitment is year-specific and cross-substitution between these three types is not supported by the specifications.
For the 2019 and 2020 Wrangler, the 3157 specification is conditional, applying only to vehicles with halogen capsule headlamps. This indicates that brake bulb fitment for those years is trim-dependent, and the correct bulb size cannot be determined from the model year alone without confirming the headlamp configuration.
The center high mount stop light (CHMSL) on the Wrangler used the 921 bulb across model years 1997-2006. The 921 is a single-filament T15 wedge bulb rated at 12V and 16W, conforming to ANSI standards.
The 1994-1995 Wrangler CHMSL specification calls for the 912 rather than the 921. The 912 is also a T15 wedge bulb but is rated at 12W, making it a lower-wattage variant of the 921. The two bulbs share the same physical form factor but differ in power output, and the year-specific specification should be followed when selecting a replacement.
All bulb types listed across the Wrangler brake specifications, including the 7440, 3157, 1157, 2057, 921, and 912, conform to ANSI standards applicable to the US and Canadian markets.
The brake light specifications for the Wrangler span from 1987 through 2024, with four distinct bulb types used in the main brake position (1157, 2057, 3157, and 7440) and two in the CHMSL position (912 and 921), reflecting changes in socket design and circuit requirements across different generations of the vehicle.