The Mitsubishi Montero brake light utilizes 7443, 2057, and 1157 bulb sizes depending on the specific production period for the vehicle. Available information covers the range from 1983 to 2006.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi Montero brake light specifications cover three distinct bulb types across the main brake light position: the 1157, 2057, and 7443. All three are dual-filament bulbs rated at 12 volts, meaning each carries two separate filaments to serve both the running light and the brighter stop light functions within a single housing.
The 1157 and 2057 both use a BAY15d bayonet base, which is a two-pin offset bayonet mount. Despite sharing the same base type, the 2057 operates at a higher wattage of 26.9W/5W on its filaments compared to the 1157 at 21W/5W, making the two bulbs non-identical even though they are physically interchangeable in terms of socket fit.
The 7443 uses a T20 wedge base rather than a bayonet mount, which makes it physically incompatible with sockets designed for the 1157 or 2057. The Mitsubishi Montero (2001-2006) requires this wedge-style fitting for the main brake light position.
The Montero (1992-2000) used the 2057 for the main brake light, a bulb that shares the BAY15d base with the 1157 used in earlier model years. While the socket accepts either bulb, substituting a 1157 for a 2057 results in lower output due to the wattage difference.
For the Center High Mount Stop Light, the specifications list two bulb types: the 921 and the 168. These are single-filament wedge bulbs, which is consistent with the dedicated stop-only function of a center high mount stop light, as no running light duty is required.
The 921 is a T15 wedge bulb rated at 12V and 16W. The 168 is a T10 wedge bulb rated at 12V and 4.9W. The two are not interchangeable due to differences in both physical size and wattage output.
The Mitsubishi Montero (1998-2006) uses the 921 bulb in the Center High Mount Stop Light position. The 1992-1997 model years use the 168 bulb in the same position, which operates at considerably lower wattage than the 921.
All five bulb types listed across these specifications conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances across the range.
The 168 bulb, used in the Center High Mount Stop Light on the Montero (1992-1997), is classified as a miniature wedge type. At 4.9W, it draws significantly less power than any of the main brake light bulbs listed in these specifications.
The main brake light position on the Montero spans three different bulb types across the 1983-2006 production range, and none of the three are directly interchangeable with one another due to differences in base type, socket design, or physical form factor.