The Mercedes-Benz 240D uses H6024 bulbs for both high beam and low beam headlight applications, with this size representing the standardized bulb specification across both functions. The replacement chart covers vehicle production spanning 1974 to 1983, detailing bulb size requirements throughout the model's manufacturing period.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Mercedes-Benz 240D uses the H6024 bulb size across both high beam and low beam headlight positions for the full 1974-1983 model range covered in these specifications.
The H6024 is an ANSI-standardized sealed beam unit, meaning the lens, reflector, and filament are fused into a single non-serviceable assembly rather than housing a separate replaceable bulb inside.
When a filament fails in an H6024 unit, the entire sealed beam assembly requires replacement, as no internal bulb component is accessible or separable.
The H6024 format is a 7-inch round sealed beam, a size governed by ANSI standards and recognized across the United States and Canada, which allowed for broad cross-manufacturer interchangeability during the era these vehicles were produced.
The unit operates at 12 volts, consistent with the standard automotive electrical systems found in passenger vehicles of this type.
Because the same H6024 unit serves both the high beam and low beam positions on the 240D, the vehicle does not use separate bulb types for each function, which is a characteristic of certain sealed beam configurations where beam pattern is determined by the unit itself rather than a dual-filament arrangement in distinct housings.