Nissan B110 Dome Light Bulb Size

The Nissan B110 dome light uses a DE3175 bulb size for interior illumination. The replacement chart covers 1970 to 1973 production years with corresponding bulb specifications.

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
1970-1973	DE3175

Bulb Specifications

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

Other Locations

Additional Notes

The Nissan B110 uses the DE3175 bulb for the dome light across the 1970-1973 model years.
The DE3175 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.
The DE3175 operates at 12 volts, which is consistent with standard automotive electrical systems of that era.
The 31mm length of the DE3175 is a critical fitment factor, as festoon bulbs must physically span the contact points of the fixture to complete the circuit.
The DE3175 designation follows the ANSI standard used in the United States and Canada, indicating the bulb conforms to a defined specification for size and electrical characteristics within those markets.