BMW X1 Glove Box Bulb Size

Additional Notes

• The BMW X1 glove box uses two distinct bulb types across its model years: the 12961, a miniature wedge bulb, and the DE3423, a festoon bulb. These two types are not interchangeable due to their fundamentally different base designs and physical configurations.
• The 12961 is a Philips part number designating a T10 miniature wedge bulb with a W2.1x9.5d base, rated at 12V and 5W. The wedge base relies on the bulb's glass envelope being pinched at the bottom to form a friction-fit connection within the socket, requiring no separate metal base.
• The DE3423 follows the ANSI standard used in the United States and Canada. It is a festoon-style bulb measuring 41mm in length, making contact through metal end caps at both ends of the tube rather than through a wedge or pin base.
• The BMW X1 (2016-2022) specifies the 12961 bulb for the glove box position. The year 2020 is not represented in the available specifications.
• The BMW X1 (2012-2015) specifies the DE3423 festoon bulb for the glove box position, reflecting a different interior lighting socket configuration from later model years.
• Because the 12961 uses a wedge base and the DE3423 uses end-cap contacts, a socket designed for one type cannot physically accept the other, making year-specific fitment verification necessary before replacement.
• The DE3423 is rated at 12V but its wattage is not specified in the available data, while the 12961 is explicitly rated at both 12V and 5W, placing it in the low-wattage range typical of interior courtesy lighting applications.