The Suzuki Grand Vitara brake component utilizes a 7443 bulb size for illumination across all listed vehicle applications within the provided technical data set. Information provided covers a continuous range from 1999 through 2013 for the specified lighting equipment.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Grand Vitara uses the 7443 bulb for its brake lights across all model years from 1999 to 2013, making it the most consistently specified bulb type in these specifications.
The 7443 is a dual-filament wedge bulb in the T20 form factor, rated at 12V with a 21W/5W output. The dual-filament design allows a single bulb to serve both the brake and tail light functions at different wattages.
The center high mount stop light (CHMSL) on the Grand Vitara does not follow a single bulb standard across all years, with three different bulb types specified depending on the model year.
The 12961 bulb is specified for the CHMSL on the 2006-2013 Grand Vitara. It is a Philips part number rather than an ANSI standard designation, referencing a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W.
The 921 bulb is specified for the CHMSL on the 1999, 2001-2004 Grand Vitara. It is an ANSI-standard T15 wedge bulb rated at 12V and 16W, which is notably higher in wattage than the other CHMSL bulbs listed in these specifications.
The 168 bulb is specified for the CHMSL on the 2000 and 2005 Grand Vitara. It is an ANSI-standard T10 miniature wedge bulb rated at 12V and 4.9W.
The 168 and 12961 bulbs share the same T10 form factor, but the 12961 carries a Philips-specific designation and specifies a W2.1x9.5d base, while the 168 is defined under the ANSI standard. These are not confirmed as interchangeable within these specifications.
The 921 bulb, at 16W, operates at a significantly higher wattage than both the 168 (4.9W) and the 12961 (5W), despite all three being specified for the same CHMSL position across different model years. Substituting one for another without confirming socket and voltage compatibility would be inadvisable.
The T20 form factor of the 7443 is physically larger than the T10 and T15 form factors used in the CHMSL, which reflects the different housing requirements between the main brake light and the high mount stop light positions.
The 7443 bulb carries an ANSI standard designation applicable in both the United States and Canada, indicating it conforms to a standardized specification rather than a manufacturer-specific part number.