The Suzuki Sidekick brake component utilizes a 1157 bulb size for the lighting system according to the provided technical specifications for the vehicle. Data for the specified automotive lighting covers the period from 1989 through 1998.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Sidekick uses the 1157 bulb for its brake lights across the full 1989-1998 model year range.
The 1157 is a dual-filament bulb with a BAY15d bayonet base, rated at 12V with a 21W/5W output, where the higher wattage filament serves the brake function and the lower wattage filament serves a secondary function such as running lights.
The BAY15d bayonet base on the 1157 features two offset pins, a design that prevents incorrect installation by ensuring the bulb can only be seated in one orientation.
The center high mount stop light on the Suzuki Sidekick uses the 921 bulb across the same 1989-1998 model year range.
The 921 is a single-filament wedge-type bulb in the T15 form factor, rated at 12V and 16W, and it seats by friction rather than a bayonet or screw mechanism.
The 1157 and 921 are not interchangeable with each other, as they differ in base type, filament count, wattage, and physical form factor.
Both the 1157 and 921 are ANSI-standardized bulbs recognized in the United States and Canada, meaning replacements conforming to those ANSI designations from different manufacturers are generally compatible.
The dual-filament construction of the 1157 is a critical fitment consideration, as substituting a single-filament bulb of a similar base type would result in the loss of one lighting function.