The Mazda 2 front inner turn signal bulb uses a PY21W size, while front and rear turn signal bulbs utilize PY21W and 7440NA sizes respectively. The replacement chart covers vehicle production years spanning 2011 to 2014 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 2 turn signal system across 2011-2014 relies on three distinct bulb types: PY21W, 12496, and 7440NA, each governed by different international standards and physical bases.
The PY21W is an ECE-standard bulb used in Europe and worldwide markets. It operates at 12V and 21W with a single filament and uses a BAU15s bayonet base, which is an offset-pin base that prevents incorrect installation of non-amber bulbs in amber-designated sockets.
The 7440NA is an ANSI-standard bulb used in US and Canadian markets. It is a single-filament T20 wedge bulb rated at 12V and 21W. The "NA" designation refers to its natural amber glass envelope, which produces the amber signal color without relying on a colored socket or lens.
The 12496 is a Philips/Osram part number designation for a 12V halogen bulb intended for specialty applications. Unlike the PY21W and 7440NA, its wattage is not specified in the provided data.
The front turn signal position on the Mazda 2 uses the PY21W bulb consistently across all four model years, 2011-2014.
The rear turn signal position on the Mazda 2 uses the 7440NA bulb consistently across all four model years, 2011-2014.
The front inner turn signal position shows a bulb change between model years. The 2011-2012 Mazda 2 uses the 12496 bulb in this position, while the 2013-2014 model years use the PY21W instead.
The PY21W and 7440NA share the same voltage and wattage ratings at 12V and 21W, but they are not interchangeable due to their fundamentally different base types. The BAU15s bayonet base of the PY21W is physically incompatible with the wedge socket of the 7440NA.
The amber color in the PY21W is produced by an amber-coated or amber-glass bulb envelope, while the 7440NA achieves amber output through natural amber glass. Both methods meet amber signal requirements but through different construction approaches.
The front inner turn signal and front turn signal positions on the 2013-2014 Mazda 2 both use the PY21W, though they remain separate positions with separate sockets in the vehicle's lighting assembly.