The Mazda MX-5 Miata side marker requires a 194 bulb size for the specific lighting components. Data for the bulb specifications covers the range from 2018 through 2019.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mazda MX-5 Miata uses the 12961 bulb across all listed front side marker positions from 2006-2019, representing an uninterrupted fitment span of fourteen model years for that position.
The 12961 is a Philips part number designating a miniature wedge-type bulb in the T10 form factor, rated at 12 volts and 5 watts.
The T10 designation refers to a tubular bulb body that is 10mm wide, a size widely used in low-current automotive signal and marker applications.
The W2.1x9.5d base specification describes a wedge-style connector where the glass pinch itself acts as the retention mechanism, requiring no separate metal base or locking collar.
At 5 watts, the 12961 operates as a low-draw marker bulb, consistent with its use in always-on side marker circuits rather than high-intensity signaling functions.
The rear side marker position on the Mazda MX-5 Miata also uses the 12961 bulb for the 2016-2019 model years, sharing the same bulb type as the front side marker across those years.
Because both the front and rear side marker positions share the 12961 specification across their respective listed years, a single bulb type serves both locations on the vehicle during the overlapping model years.
The W2.1x9.5d wedge base is not universally interchangeable with all T10-sized bulbs, as some T10 variants use different base configurations, making base type a relevant factor when selecting a replacement.