Mercedes-Benz 300TD Headlight Bulb Size

The Mercedes-Benz 300TD uses 9004 and H6024 bulb sizes for both high beam and low beam headlight applications. The replacement chart covers 1979 to 1987 production years with 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	9004	HB1	Check Price
1979-1985	H6024	H6024	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	9004	HB1	Check Price
1979-1985	H6024	H6024	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). 7-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6024	Check Price

Other Locations

Additional Notes

The Mercedes-Benz 300TD uses two distinct headlight bulb types across its model years: the H6024 sealed beam unit and the 9004 dual-filament halogen bulb.
The H6024 is a 7-inch round sealed beam unit operating at 12V. It is not a replaceable bulb in the conventional sense, as the entire unit requires replacement when the light fails.
The 9004 is a dual-filament halogen bulb with a P29t base, rated at 12V with a wattage of 65W on high beam and 45W on low beam.
Both the H6024 and 9004 are ANSI-standardized types approved for use in the United States and Canada.
The 300TD used the H6024 sealed beam unit for both high beam and low beam functions across the 1979-1985 model years.
The 1987 Mercedes-Benz 300TD uses the 9004 bulb for both high beam and low beam positions, meaning a single bulb type serves both functions through its dual-filament design.
Because the H6024 is a sealed beam unit and the 9004 is a socketed halogen bulb with a P29t base, the two types are not interchangeable despite serving the same headlight positions.