BMW 750iL License Plate Bulb Size

The BMW 750iL license plate light uses a DE3423 bulb size to provide illumination for the rear identification area of the vehicle. Available information covers the range of 1988 through 2001 for the specific component mentioned.

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 Type	Shop
1988-2001	DE3423	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V.	DE3423	Check Price

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Additional Notes

The BMW 750iL uses the DE3423 bulb for its license plate lighting across all specified model years from 1988-2001.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in form and makes electrical contact through metal caps at each end rather than through a base socket.
Festoon bulbs are held in place by spring-loaded clips that press against the end caps, a mounting method common in enclosed license plate lamp housings.
The DE3423 has a nominal length of 41mm, which is a critical fitment factor, as festoon bulbs must physically span the distance between the two contact clips inside the housing.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this type.
The DE3423 carries an ANSI designation, indicating it conforms to a standardized specification recognized in both the United States and Canada.
Because festoon bulbs are sized by their length and contact style, substituting a bulb of a different length, such as a 36mm or 44mm festoon, would result in a poor or failed connection within the BMW 750iL housing.