The Nissan LEAF dome light requires a DE3175 bulb size for proper installation and function within the interior overhead lighting fixture. Provided information covers the span from 2011 through 2020 for the specified component.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Nissan LEAF uses the DE3175 bulb for the dome light across the 2011-2020 model years, making it the dominant bulb type in these specifications.
The DE3175 is an ANSI-standardized festoon bulb with a 31mm length and end-cap contacts, operating at 12V. Its festoon design means it seats between two spring-loaded metal contacts rather than inserting into a socket.
The 2022-2023 Nissan LEAF Front Dome Light uses the 12961 instead of the DE3175, indicating a housing change between the earlier and later generations of this model.
The 12961 is a Philips part number for a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. The wedge base design uses the bulb's own glass envelope to create a friction fit within the socket, with no separate end-cap contacts.
The DE3175 and 12961 are physically and electrically incompatible with each other. The festoon end-cap contact design of the DE3175 cannot fit a wedge-base socket, and the T10 wedge form of the 12961 cannot seat in a festoon holder.