Jaguar XE front turn signal bulbs use 12961 or 12174NA sizes, while rear turn signal bulbs use 916NA size. The replacement bulb chart covers 2017 to 2019 model years with corresponding specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 916NA bulb appears across all three model years (2017-2019) of the Jaguar XE rear turn signal position, making it the most consistently specified bulb in this dataset.
The 916NA is an ANSI-standardized bulb recognized in the US and Canada, with a T15 wedge form factor, natural amber glass, and a 12V, 18W rating.
Natural amber glass in a bulb means the amber color is produced by the glass envelope itself rather than by a coating or lens filter, which is a characteristic of the NA designation shared by both the 916NA and 12174NA types.
The 12174NA is specified for the Jaguar XE front turn signal in 2017-2018 and carries an OEM part number designation rather than an ANSI or manufacturer-branded one.
The 12961 is a Philips-branded part number for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W, and is specified only for the 2019 front turn signal in the mirror position.
The W2.1x9.5d base designation on the 12961 refers to a specific wedge base standard where the 2.1mm wire contact width and 9.5mm insertion depth define its physical fitment.
The 2019 front turn signal position shifts from the 12174NA to the 12961, and the mirror-specific notation indicates this bulb serves a turn signal function integrated into the side mirror assembly rather than the main front housing.
The T10 form factor of the 12961 is physically smaller than the T15 form factor of the 916NA, and the two bulb types are not interchangeable despite both using wedge-style bases.
The 12961 at 5W and the 916NA at 18W represent a significant wattage difference, which reflects their separate roles as a compact mirror indicator and a primary rear turn signal, respectively.
The 12174NA specification does not include a listed wattage value, distinguishing it from the other two bulb types in this set where wattage is explicitly stated.