Nissan 280Z Dome Light Bulb Size

The Nissan 280Z dome light requires a DE3175 bulb size for proper illumination. Replacement bulb specifications in the chart span 1975 to 1978 production years.

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
1975-1978	DE3175

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3175

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Additional Notes

The DE3175 is the sole dome light bulb type listed for the Nissan 280Z across the 1975-1978 model years.
The DE3175 follows the ANSI standard, meaning it conforms to a specification recognized across the United States and Canada.
The DE3175 is a festoon-style bulb, a form factor defined by a cylindrical body with metal end caps that make contact with spring-loaded holders on each end of the fixture.
The bulb body is 31mm in length, which is the defining physical attribute that determines fitment within the dome light housing.
The DE3175 operates at 12 volts, consistent with the standard electrical system voltage found in conventional passenger vehicles of that era.
The end-cap contact design of the DE3175 means the bulb is not interchangeable with wedge-base or bayonet-base festoon variants, even if the body length is similar.