Mazda CX-5 Brake Bulb Size

Additional Notes

• The 7443 is the brake bulb size across all listed model years of the Mazda CX-5, spanning 2013-2023.
• The 7443 bulb follows the ANSI standard recognized in the United States and Canada, classifying it as a regionally standardized automotive component.
• The 7443 is a dual-filament wedge bulb, meaning it contains two separate filaments within a single housing. One filament operates at 21W for high-intensity functions such as braking, while the second operates at 5W for lower-intensity functions such as running lights.
• The T20 designation refers to the bulb's wedge base form factor, which is a push-in style base without a metal screw shell. This base type is common in tail, brake, and turn signal applications.
• The bulb operates at 12V, consistent with the standard electrical system voltage found in conventional passenger vehicles.
• For the 2017-2020 Mazda CX-5, the 7443 brake bulb size applies specifically to trims equipped without LED tail lights. Trims fitted with LED tail lights do not use this bulb for the brake light function.
• The 2016 Mazda CX-5 carries a distinct qualifier, restricting the 7443 fitment to trims with halogen capsule headlamps rather than referencing the tail light configuration as seen in surrounding model years.
• For the 2021-2023 model years, no trim-level qualifier is listed, indicating the 7443 applies without restriction across those years as specified.