The Mercedes-Benz 500SEL uses 1034 and P21/5W bulbs for front turn signals, along with P21W bulbs for rear turn signals, with each size corresponding to specific lighting positions. The replacement chart covers 1984 to 1993 production years and details bulb size specifications across the vehicle's model run.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.