The Suzuki Vitara brake light requires a 7443 bulb size for proper installation and function within the rear lighting assembly. Data provided covers the specific range from 1999 to 2004.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Vitara uses the 7443 bulb for its brake lights across the 1999-2004 model years. This bulb is a dual-filament wedge type in the T20 form factor, 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 lighting function.
The 7443 is an ANSI-standardized bulb used in the US and Canadian markets, meaning it conforms to a defined set of electrical and physical parameters shared across multiple manufacturers and vehicle applications.
The center high mount stop light (CHMSL) on the Suzuki Vitara uses different bulb sizes depending on the model year. The 2000-2004 model years use the 168 bulb, while the 1999 model year uses the 921 bulb.
The 168 bulb is a single-filament miniature wedge type in the T10 form factor, rated at 12V and 4.9W. Its low wattage reflects its role in a supplemental stop light rather than a primary high-load application.
The 921 bulb fitted to the 1999 Vitara CHMSL is a single-filament wedge type in the T15 form factor, rated at 12V and 16W. This represents a substantially higher wattage output than the 168 bulb used in subsequent model years.
The T10 and T15 form factors of the 168 and 921 bulbs are physically distinct from one another, and the two bulbs are not interchangeable despite both being single-filament wedge types operating at 12V.
The 7443 dual-filament construction distinguishes it from the single-filament 168 and 921 bulbs. Substituting a single-filament bulb in a socket designed for a dual-filament application would result in the loss of one lighting function.
All three bulb types listed in the specifications, the 7443, 168, and 921, are ANSI-standardized for the US and Canadian markets, indicating consistent electrical compatibility standards across the bulb set used in this vehicle.