BMW 530i License Plate Bulb Size

The BMW 530i license plate light requires a DE3423 bulb size for proper installation and function. Available information covers the specific time range from 1975 through 2007.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2001-2007	DE3423
1994-1995	DE3423
1975-1978	DE3423

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423

Other Locations

Additional Notes

The BMW 530i uses the DE3423 bulb for the license plate position across all years listed in the specifications, spanning 1975-2007.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket or pins.
The DE3423 has a 41mm length, which is the critical fitment factor for festoon bulbs, as the housing retains the bulb by tension between its two end contacts.
The DE3423 operates at 12 volts, consistent with standard automotive electrical systems.
The DE3423 carries ANSI standardization recognized in both the United States and Canada, meaning the designation refers to a defined specification rather than a proprietary part number.
Because the DE3423 is an ANSI-standardized festoon bulb, other bulbs sharing the same 41mm length and end-cap contact design may be cross-compatible, though fitment should be confirmed against the housing specifications of the BMW 530i before substitution.