INFINITI I35 Dome Light Bulb Size

The INFINITI I35 dome light uses a DE3175 bulb size for interior illumination. Replacement chart data covers 2002 to 2004 model 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
2002-2004	DE3175

Bulb Specifications

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

Other Locations

Additional Notes

The DE3175 is the dome light bulb size for the Infiniti I35 across all three model years covered by these specifications, spanning 2002-2004.
The DE3175 follows the ANSI standard, which is the recognized bulb classification system used in the United States and Canada.
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 31mm length of the DE3175 refers to the distance between the two end-cap contacts, which is the critical fitment factor for festoon bulbs installed in spring-loaded dome light housings.
The DE3175 operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles.
Because festoon bulbs rely on end-cap contact spacing for fitment, substituting a festoon bulb of a different length would result in an improper fit regardless of voltage compatibility.