The Mitsubishi Eclipse brake light utilizes a 2057 bulb size for the specific lighting component located at the rear of the vehicle. Data for the specified automotive lighting covers the range from 1990 through 2005.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mitsubishi Eclipse uses the 2057 bulb for brake lighting across all model years from 1990 to 2005, making it the most consistently specified bulb type in these specifications.
The 2057 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a wattage split of 26.9W for the high-intensity filament and 8W for the low-intensity filament. This dual-filament design allows a single bulb to serve both brake and tail light functions.
The 2057 is a brighter variant of the 1157, sharing the same BAY15d bayonet base. This base type uses two offset pins at different heights to prevent incorrect installation orientation.
The center high mount stop light (CHMSL) on the Mitsubishi Eclipse uses three different bulb types depending on the model year, indicating a hardware change across generations.
The 1156 bulb was specified for the CHMSL on the Eclipse from 1990 to 1994. It is a single-filament bulb with a BA15s bayonet base, rated at 12V and 21W.
The 3497 replaced the 1156 in the CHMSL position for the 1995-1999 Eclipse. Both share the BA15s bayonet base and identical 12V, 21W ratings, classifying the 3497 as a variant of the 1156.
Because the 1156 and 3497 share the same BA15s base and electrical ratings, their physical and electrical compatibility is closely related, though substitution should be confirmed against fitment requirements for the specific housing.
From 2000 to 2005, the Eclipse CHMSL specification shifted to the 921, a wedge-style T15 bulb rated at 12V and 16W. The wedge base is a push-in type with no locking pins, differing fundamentally from the bayonet-style bases used in earlier CHMSL bulbs.
The 921 wedge bulb is not interchangeable with the 1156 or 3497 due to the incompatible base types, meaning earlier and later Eclipse CHMSL housings are not designed for the same bulb format.
All bulb types specified across both positions follow ANSI standards applicable to the US and Canadian markets.