Freightliner Sprinter Courtesy Bulb Size

The Freightliner Sprinter courtesy bulb uses a 12961 size designation for this specific lighting component. The replacement chart covers vehicle production spanning 2005 to 2018.

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
2005-2018	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 Freightliner Sprinter uses the 12961 bulb for its courtesy lighting across the 2005-2018 model years.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor, which refers to a tubular bulb approximately 10mm wide.
The bulb operates on 12 volts at 5 watts, placing it in the low-power range typical of interior courtesy and map lighting applications.
The 12961 uses a W2.1x9.5d base, which is the standard wedge-type base where the bulb itself acts as the contact point rather than a separate metal cap or pin configuration.
The W2.1x9.5d designation indicates a wedge base 9.5mm in length with a 2.1mm wire contact width, a format widely used in automotive interior lighting.
The T10 wedge format is shared across many automotive applications, though wattage and voltage ratings must match the original specification before substitution is considered appropriate.
Because the 12961 is a Philips-specific part number, equivalent bulbs from other manufacturers are typically cross-referenced by the T10 wedge form factor combined with the 12V, 5W electrical rating.