The Toyota MR2 Spyder brake light utilizes 7440 and 7443 bulb sizes depending on the specific vehicle configuration. Data for the bulb sizes covers the range from 2000 to 2005.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Toyota MR2 Spyder brake bulb specifications cover the 2000-2005 model years across three sub-parts: the general brake light, the Center High Mount Stop Light, and the Outer Brake light.
The 7443 is a dual-filament T20 wedge bulb rated at 12V with a 21W primary filament and a 5W secondary filament, conforming to ANSI standards for the US and Canada. Its dual-filament design allows it to serve both brake and tail light functions within a single bulb.
The 7440 is a single-filament T20 wedge bulb rated at 12V, 21W, also under ANSI standards. Although it shares the same T20 wedge base as the 7443, it carries only one filament, making the two types non-interchangeable despite their physical similarity.
For the general brake position on the Toyota MR2 Spyder, the 7440 was specified for the 2000-2001 and 2003 model years, while the 7443 was specified for 2002, 2004, and 2005. This variation across the production run means the correct bulb type depends strictly on the model year.
The Outer Brake position uses the 7443 across all six model years, with the 2000 entry noting fitment from 12/1999 and the 2005 entry noting fitment to 01/2005, indicating mid-production-cycle applicability boundaries at both ends of the range.
The Center High Mount Stop Light uses the 168 bulb across all 2000-2005 model years without variation. The 168 is a miniature T10 wedge bulb rated at 12V, 4.9W, a significantly lower wattage than the T20 bulbs used in the other brake positions.
The T10 and T20 wedge bases are physically distinct, so the 168 is not interchangeable with either the 7440 or the 7443 regardless of voltage compatibility.
All three bulb types in these specifications conform to ANSI standards applicable in the US and Canada, placing them within the same standardized classification system while differing in filament count, wattage, and base size.