Porsche 718 Boxster 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 Boxster, 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 that relies on spring tension from the socket rather than a separate locking mechanism to maintain contact.
• The 12961 operates at 12 volts and 5 watts, which is consistent with low-current interior lighting applications where heat output and power draw are kept minimal.
• The Porsche 718 Boxster uses the 12961 bulb for trunk illumination across the 2017-2024 model years, with the 2020 model year carrying a conditional note that this fitment applies only to vehicles without the Interior light package.
• The W2.1x9.5d base standard is shared across a wide range of automotive interior bulbs, meaning the 12961 is physically interchangeable with other T10 wedge bulbs carrying the same base type, provided voltage and wattage ratings are also compatible.
• Substituting a higher-wattage T10 bulb in place of the specified 5W unit risks exceeding the thermal and electrical tolerances of the socket, as the circuit is rated around the original specification.