Subaru Crosstrek Cargo Box Bulb Size

The Subaru Crosstrek cargo box utilizes a 12961 bulb size for the interior lighting component located within the rear storage area. Data for the specific lighting requirements covers the period from 2021 through 2023.

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 Type	Shop
2021-2023	12961	Check Price

Bulb Specifications

Description	Type	Shop
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961	Check Price

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Additional Notes

The Subaru Crosstrek cargo box uses the 12961 bulb across the 2021-2023 model years, indicating a consistent fitment specification throughout this period.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which is one of the most widely used bulb types in automotive interior and auxiliary lighting applications.
The T10 bulb operates at 12 volts and 5 watts, a low-wattage rating typical of non-critical interior lighting such as cargo illumination.
The W2.1x9.5d base type is the standard wedge base used on T10 bulbs, where the bulb body itself acts as the retention mechanism rather than a separate metal base with pins.
Because the W2.1x9.5d wedge base is a standardized interface, T10 bulbs from manufacturers other than Philips sharing the same base and electrical ratings are generally interchangeable with the 12961 in the Crosstrek (2021-2023) cargo box position.