Honda Passport Dome Light Bulb Size

The Honda Passport dome light uses bulb size 12961 and bulb size DE3175 for interior illumination. Available data for the specified components covers the range from 1994 to 2024.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2023-2024	12961
2020-2021	12961
1994-2002	DE3175

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

Other Locations

Additional Notes

The Honda Passport dome light uses two distinct bulb types across its production years: the 12961 (T10 wedge) for 2020-2024 models and the DE3175 (31mm festoon) for 1994-2002 models.
The 12961 is a Philips part number designating a miniature wedge bulb with a T10 profile and a W2.1x9.5d base, operating at 12V and 5W.
The W2.1x9.5d base on the 12961 bulb refers to a wedge-type base where the glass envelope itself forms the contact points, with a 9.5mm pin spacing and 2.1mm wire contact width.
The DE3175 is an ANSI-standardized festoon bulb recognized across the United States and Canada, measuring 31mm in length with end-cap contacts at both terminals and operating at 12V.
Festoon bulbs like the DE3175 make contact through metal caps at each end of the cylindrical body, a configuration that differs fundamentally from the wedge-base design of the 12961.
The two bulb types are not interchangeable, as the T10 wedge base and the 31mm festoon end-cap format are physically incompatible socket designs.