Mercedes-Benz 190D Headlight Bulb Size

The Mercedes-Benz 190D high and low beam headlight bulb sizes are 9004 and H6054, with both beams utilizing the same bulb size. The replacement chart covers vehicle production years from 1984 to 1989 and displays corresponding bulb size specifications.

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
1987-1989	9004	HB1	Check Price
1984-1986	H6054	H6054	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
1987-1989	9004	HB1	Check Price
1984-1986	H6054	H6054	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament halogen bulb with P29t base. 12V, 65W/45W.	9004	Check Price
ANSI standard (US & Canada). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6054	Check Price

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Additional Notes

The Mercedes-Benz 190D used two distinct headlight technologies across its 1984-1989 model years: the H6054 sealed beam unit for 1984-1986 and the 9004 dual-filament halogen bulb for 1987-1989.
The 9004 is a dual-filament halogen bulb with a P29t base, rated at 12V and drawing 65W on high beam and 45W on low beam. A single bulb serves both high and low beam functions through its two filaments.
The H6054 is a 5x7-inch rectangular sealed beam unit operating at 12V. Unlike a conventional replaceable bulb, the entire sealed unit is replaced when the light fails or the lens is damaged.
Both the 9004 and H6054 conform to ANSI standards applicable in the United States and Canada, meaning they are standardized types rather than proprietary or manufacturer-specific components.
On the 1987-1989 190D, the same 9004 bulb size is specified for both the high beam and low beam positions, indicating a single-bulb-per-side configuration rather than separate bulbs for each function.
On the 1984-1986 190D, the H6054 sealed beam unit is likewise specified for both high and low beam positions, consistent with the sealed beam design where both filaments are housed within one unit.
The transition from H6054 to 9004 between the 1986 and 1987 model years represents a shift from a sealed beam assembly to a replaceable halogen bulb format, which affects how headlight servicing is performed.
The 9004 and H6054 are not interchangeable. The sealed beam format of the H6054 and the socketed P29t base of the 9004 are physically and electrically incompatible with each other's housing.