Suzuki Equator front turn signal bulbs use 7443NA size while rear turn signal bulbs use 3156NA size. The replacement chart covers 2009 through 2012 vehicle production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Equator uses two distinct bulb types across its turn signal positions: the 7443NA for the front and the 3156NA for the rear, both consistent across the 2009-2012 model years.
The 7443NA is a dual-filament wedge bulb in the T20 form factor, rated at 12V with a 21W/5W power draw, meaning its two filaments serve different brightness levels within the same housing.
The 3156NA is a single-filament wedge bulb in the T25 form factor, rated at 12V and 27W, drawing more wattage than the higher-intensity filament of the 7443NA despite serving only one function.
Both bulb types carry the "NA" suffix, which denotes natural amber glass rather than a clear envelope with an amber-coated or standard bulb inside, producing the amber signal color directly through the glass itself.
Both the 7443NA and 3156NA conform to ANSI standards recognized in the United States and Canada, placing them within a regulated specification framework for electrical and photometric performance.
The T20 and T25 designations refer to the wedge base sizes of the respective bulbs, and these two sizes are not interchangeable with each other despite both being wedge-type bases.
Because the 7443NA is dual-filament and the 3156NA is single-filament, substituting one for the other is not electrically compatible, even if a physical fit were somehow achieved.
The front turn signal position on the Suzuki Equator (2009-2012) uses the dual-filament 7443NA, which suggests the front housing may serve a combined function, such as turn signal and parking light, sharing the single bulb across both circuits.