The Suzuki Equator brake light utilizes 3157 and 2458 bulb sizes for the specific lighting components located on the rear of the vehicle. Data for the bulb specifications covers the range from 2009 to 2012.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Equator uses the 3157 bulb for brake lighting across all four model years from 2009-2012.
The 3157 is a dual-filament T25 wedge bulb rated at 12V with a 27W/7W output, conforming to ANSI standards for the US and Canadian markets. The dual-filament design allows a single bulb to serve two functions, typically a lower-intensity running light and a higher-intensity brake signal.
The center high mount stop light on the Suzuki Equator uses the 921 bulb across the full 2009-2012 model range.
The 921 is a single-filament T15 wedge bulb rated at 12V and 16W, also conforming to ANSI standards for the US and Canadian markets.
The 3157 and 921 are both wedge-base bulbs, but they belong to different size classes, T25 and T15 respectively, making them physically non-interchangeable despite sharing the same base style.
The lower wattage of the 921 (16W) relative to the 3157's brake filament (27W) reflects the reduced output requirement of a center high mount stop light housing compared to the main brake light assembly.