Porsche 718 Cayman Trunk Bulb Size

Additional Notes

• The T10 miniature wedge bulb is the sole trunk bulb type listed across all specified model years of the Porsche 718 Cayman, appearing under the Philips part number 12961.
• The T10 designation refers to a tubular bulb with a 10mm body width, and the W2.1x9.5d base is a wedge-type base where the electrical contacts are formed by the glass envelope itself rather than a separate metal cap.
• The 12961 bulb operates at 12 volts and 5 watts, which places it in the low-wattage range typical of interior courtesy and cargo lighting applications.
• The Porsche 718 Cayman uses the 12961 bulb for trunk lighting across the 2017-2024 model years, with the 2022 model year absent from the listed specifications.
• For the 2020 Porsche 718 Cayman, the 12961 fitment is noted specifically for vehicles without the Interior light package, indicating that an alternative lighting configuration exists under that option.
• The W2.1x9.5d base type is not universally interchangeable with other wedge base variants; substituting a bulb with a different base width or pin spacing risks an improper fit within the socket.
• Although T10 is a widely produced bulb format available from multiple manufacturers, the 12961 designation is specific to Philips and denotes a particular product within that format rather than a generic cross-reference.