Mercedes-Benz CLK55 AMG Headlight Bulb Size

The Mercedes-Benz CLK55 AMG uses H7 bulbs for high beam headlights and H7, D2S, or D2R bulbs for low beam headlights, with the specific size depending on production specifications. The replacement chart covers 2001 through 2006 model years and details bulb size requirements across the vehicle production range.

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

High Beam Headlight

Years	Bulb Type	Shop
2001-2006	H7	Check Price

Low Beam Headlight

Years	Bulb Type	Shop
2003-2006	D2S (With HID Headlamps)	Check Price
2003-2006	H7 (With Halogen Capsule Headlamps)	Check Price
2001-2002	H7	Check Price
2001-2002	D2R (With HID Headlamps)	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament halogen bulb with PX26d base. Also approved in the US and Japan. 12V, 55W.	H7	Check Price
ECE standard (Europe & worldwide). HID (xenon) discharge bulb with P32d-2 base, for projector-type housings. Requires external ignitor. 85V, 35W.	D2S	Check Price
ECE standard (Europe & worldwide). HID (xenon) discharge bulb with P32d-3 base, for reflector-type housings. Requires external ignitor. 85V, 35W.	D2R	Check Price

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Additional Notes

The H7 bulb is the most widely used type across the Mercedes-Benz CLK55 AMG specifications, appearing in both the high beam position for all model years (2001-2006) and in the low beam position on halogen-equipped vehicles across the same range. It is a single-filament halogen bulb rated at 12V and 55W, fitted with a PX26d base, and recognized under ECE standards with approval also extended to the US and Japan.
Two HID bulb types are listed for the CLK55 AMG low beam position: D2S and D2R. Both operate at 85V and 35W and require an external ignitor to strike and sustain the high-intensity discharge arc, which distinguishes them from self-contained halogen bulbs.
The D2S and D2R bulbs are not interchangeable despite sharing the same wattage and voltage ratings. The D2S carries a P32d-2 base and is designed for projector-type housings, while the D2R carries a P32d-3 base and is intended for reflector-type housings. Installing the wrong type would result in a base mismatch and incorrect light distribution.
For the 2003-2006 model years, the low beam HID option is exclusively the D2S, indicating that HID-equipped vehicles from those years used projector-type housings rather than reflector-type housings.
For the 2001-2002 model years, the low beam HID option is the D2R, which corresponds to reflector-type housing use. This represents a housing type difference between the earlier and later production years of the CLK55 AMG.
The high beam circuit on the Mercedes-Benz CLK55 AMG uses the H7 bulb exclusively across all listed years, regardless of whether the vehicle is fitted with halogen or HID low beams. A vehicle equipped with D2S or D2R low beams would therefore use two different bulb technologies simultaneously.
All three bulb types listed in the specifications conform to ECE (Economic Commission for Europe) standards, which govern bulb construction, base coding, and photometric output for road use across Europe and many other markets worldwide.
The low beam position on the CLK55 AMG for 2002 lists H7 without a halogen capsule qualifier, unlike the 2003-2006 entries where the halogen option is explicitly labeled "With Halogen Capsule Headlamps." The D2R entry for 2002 carries the HID qualifier, establishing that two distinct low beam systems were available that year.