Mercedes-Benz 300SEL Headlight Bulb Size

The Mercedes-Benz 300SEL uses high beam headlight bulbs in 9004 and H5001 sizes, while low beam headlight bulbs measure 9004 and H5006 in size. The replacement chart covers 1969 through 1991 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

YearsBulb Size
1988-19919004
1969-1973H5001

Low Beam Headlight

YearsBulb Size
1988-19919004
1969-1973H5006

Bulb Specifications

Description Bulb Size
ANSI standard (US & Canada). Dual-filament halogen bulb with P29t base. 12V, 65W/45W.9004
ANSI standard (US & Canada). 4-inch square sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H5001
ANSI standard (US & Canada). 5.75-inch round sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.H5006

Other Locations

Additional Notes