Toyota Corolla Dome Light Bulb Size

The Toyota Corolla dome light utilizes DE3175 and DE3022 bulb sizes for interior illumination across various production generations. Provided technical data covers a specific range from 1968 through 2023.

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
2023	DE3175	Check Price
2020	DE3175	Check Price
1992-2016	DE3175	Check Price
1975-1983	DE3022	Check Price
1968-1974	DE3175	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175	Check Price
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022	Check Price

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Additional Notes

The Toyota Corolla dome light uses two bulb sizes across its model history: the DE3175 and the DE3022, both of which are ANSI-standard festoon bulbs rated at 12 volts with end-cap contacts and a 31mm length.
The DE3175 is the dominant fitment, appearing in the Toyota Corolla across 1968-1974, 1992-2016, 2020, and 2023.
The DE3022 applies to the 1975-1983 model years.
Because the DE3175 and DE3022 share the same physical length, voltage rating, and contact style, their designations reflect internal construction differences rather than external form, meaning they are not confirmed interchangeable despite their similar specifications.
Festoon bulbs seat into spring-loaded holders at both ends of the bulb body, with the end-cap contacts completing the circuit at each terminal rather than through a base pin or wedge.
The 31mm length is a critical fitment factor for festoon bulbs, as holders are sized to accept a specific length and a mismatched length will not make proper contact or will not seat securely.
The ANSI designation on both bulb types indicates conformance to a standardized specification recognized in the United States and Canada, which governs electrical and physical tolerances for the bulb.