Mercedes-Benz S350 Headlight Bulb Size

The Mercedes-Benz S350 high beam headlight uses H9, H7, or H1 bulb sizes, while low beam headlight applications require D1S, H7, or D2S bulb sizes depending on production specifications. The replacement chart covers 1994 through 2013 model years with corresponding bulb size data for each vehicle generation.

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

High Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2012-2013	H9	H9	Check Price
2006	H7	H7	Check Price
1995	H1	H1	Check Price
1994	9003	H4	Check Price

Low Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
2012-2013	D1S	D1S	Check Price
2006	H7	H7	Check Price
2006	D2S (With HID Headlamps)	D2S	Check Price
1995	H7	H7	Check Price
1994	9003	H4	Check Price

Bulb Specifications

Description	Type	Shop
ECE standard (Europe & worldwide). Single-filament halogen bulb with PGJ19-5 base. Also approved in the US. 12V, 65W.	H9	Check Price
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). Single-filament halogen bulb with P14.5s base. Also approved in the US and Japan. 12V, 55W.	H1	Check Price
ANSI standard (US & Canada). Dual-filament halogen bulb with P43t base. 12V, 60W/55W.	9003	Check Price
ECE standard (Europe & worldwide). HID (xenon) discharge bulb with PK32d-2 base and integral ignitor, for projector-type housings. 85V, 35W.	D1S	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

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Additional Notes

The H9 bulb, used in the Mercedes-Benz S350 high beam position for 2012-2013, is a single-filament halogen type rated at 12V and 65W. It follows the ECE standard and uses a PGJ19-5 base, with approval also granted in the United States.
The H7 bulb appears across both high beam and low beam positions in the S350 for the 1995 and 2006 model years. It is a single-filament halogen bulb rated at 12V and 55W, using a PX26d base under the ECE standard, with additional approval in the US and Japan.
The 1994 S350 uses the 9003 bulb in both the high beam and low beam positions. Unlike the ECE-standard halogen types, the 9003 follows the ANSI standard applicable in the US and Canada. It is a dual-filament bulb with a P43t base, rated at 12V with 60W on the high beam filament and 55W on the low beam filament.
The D1S bulb serves as the low beam light source for the 2012-2013 S350. It is an HID (xenon) discharge bulb operating at 85V and 35W, using a PK32d-2 base. A defining characteristic of the D1S is its integral ignitor, which is built directly into the bulb itself, and it is designed for projector-type housings.
The 2006 S350 low beam position lists two separate bulb sizes: H7 as the standard fitment and D2S for vehicles equipped with HID headlamps. These two types are not interchangeable, as they serve different headlamp system configurations.
The D2S, used in the 2006 S350 with HID headlamps, shares the same 85V and 35W electrical rating as the D1S but uses a P32d-2 base and requires an external ignitor rather than an integrated one. Substituting a D1S for a D2S, or vice versa, is not supported by the specifications due to the differing base types and ignitor configurations.
The H1 bulb is listed solely for the 1995 S350 high beam position. It is a single-filament halogen bulb rated at 12V and 55W with a P14.5s base, following the ECE standard with approval also in the US and Japan.
The base types across the listed bulbs are all distinct from one another, meaning no two bulb types in these specifications share a physically compatible socket. The PGJ19-5 (H9), PX26d (H7), P14.5s (H1), P43t (9003), PK32d-2 (D1S), and P32d-2 (D2S) bases each correspond to a specific bulb family with no cross-fitment between them.