Cadillac Catera License Plate Bulb Size

The Cadillac Catera license plate requires a DE3423 bulb size for proper illumination of the rear registration area. Data for the specified component covers the range from 1997 to 2001.

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
1997-2001	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 DE3423 is the license plate bulb size for the Cadillac Catera across its entire production run, covering model years 1997-2001.
The DE3423 is a festoon-type bulb, meaning it is cylindrical in shape and held in place by spring-loaded end caps rather than a bayonet or wedge base.
Festoon bulbs make contact with the circuit through metal caps at each end of the tube, which seat against spring clips inside the housing.
The DE3423 has a specified length of 41mm, a figure that is critical for fitment since festoon housings are sized to hold a specific length of bulb under spring tension.
The bulb operates on a 12-volt electrical system, consistent with standard automotive low-voltage circuits.
The DE3423 carries an ANSI designation, indicating it conforms to a standardized specification recognized in both the United States and Canada.
Because the DE3423 is an ANSI-standardized part, other bulbs sharing the same ANSI code and 41mm length from different manufacturers are generally considered interchangeable, provided the end-cap contacts are compatible with the housing.
Installing a festoon bulb of a different length in a spring-clip housing risks poor contact or no contact at all, since the spring tension is calibrated for a specific bulb length.