The Mazda CX-7 front turn signal requires a 7443NA or 1034NA bulb size, while the rear turn signal uses a 7440NA bulb size. The replacement chart covers 2007 through 2012 model years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mazda CX-7 front turn signal uses the 1034NA bulb for model years 2007-2011, while the 2012 model year uses the 7443NA bulb instead.
The 7443NA is a dual-filament T20 wedge bulb rated at 12V with a 21W main filament and a 5W secondary filament, finished in natural amber glass to produce an amber signal color without a colored lens.
The 1034NA carries a BAY15d bayonet base, which is a two-pin offset base design that physically prevents incorrect insertion by positioning the two pins at different heights on the base.
The 1034NA is a variant of the 1157 bulb type, sharing its dual-filament configuration and BAY15d base, though the NA suffix designates natural amber glass rather than a clear envelope.
The 7443NA used in the 2012 front position and the 1034NA used in the 2007-2011 front position are not interchangeable, as they differ in both base type and physical form factor despite sharing a similar 21W/5W power rating.
The rear turn signal across all Mazda CX-7 model years from 2007-2012 uses the 7440NA, a single-filament T20 wedge bulb rated at 12V and 21W.
The 7440NA and 7443NA share the same T20 wedge base form factor and natural amber glass, but the 7443NA carries a second 5W filament while the 7440NA does not, making them non-interchangeable in sockets wired for dual-filament operation.
All three bulb types listed carry the NA suffix, which denotes natural amber glass coloring as defined under ANSI standards applicable in the United States and Canada.
The natural amber glass construction of the NA-series bulbs produces the amber turn signal color through the glass itself rather than relying on an amber-tinted housing or lens.
All bulbs specified for the CX-7 turn signal positions operate on a 12V electrical system, consistent with standard automotive voltage.