Mercedes-Benz CLK55 AMG Map Light Bulb Size

The Mercedes-Benz CLK55 AMG map light requires a bulb with the specific size 12961 for proper installation. Data for the specified component covers the period from 2001 through 2006.

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
2001-2006	12961

Bulb Specifications

Description	Bulb Size
Philips part number. Miniature wedge bulb (T10) with W2.1x9.5d base. 12V, 5W.	12961

Other Locations

Additional Notes

The Mercedes-Benz CLK55 AMG uses the 12961 bulb for the map light across all listed model years, spanning 2001-2006.
The 12961 is a Philips part number designating a miniature wedge bulb in the T10 form factor.
T10 refers to the bulb's tubular shape, with the number indicating a width of 10 millimeters.
The bulb uses a W2.1x9.5d base, which is the standard wedge-type base common to many low-wattage automotive interior lighting applications.
The W2.1x9.5d designation describes a wedge base with a 2.1mm wire contact width and a 9.5mm insertion depth.
The 12961 operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
At 5 watts, the bulb draws relatively low current, which is typical for interior courtesy and reading light applications.
The T10 wedge format is widely used across many vehicle makes and models, meaning functionally equivalent bulbs from other manufacturers may share the same base and electrical ratings while carrying different part numbers.
When replacing this bulb, the W2.1x9.5d base type is a critical fitment factor, as wedge bases are not universally interchangeable despite similar physical sizing.