Acura NSX Dome Light Bulb Size

The Acura NSX dome light requires a DE3175 bulb size for proper illumination within the interior cabin area. Available data covers the specific range from 1994 through 2005 for the specified lighting component.

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
1994-2005	DE3175

Bulb Specifications

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

Other Locations

Additional Notes

The Acura NSX uses the DE3175 bulb size for the dome light across all listed model years from 1994 to 2005.
The DE3175 is a festoon-style bulb, meaning it is cylindrical in shape with metal end caps on each side that serve as the electrical contacts, rather than a base or pin configuration.
Festoon bulbs are held in place by spring-loaded clips within the fixture, with the end caps making direct contact at both terminals.
The DE3175 has a nominal length of 31mm, which is a critical fitment factor, as festoon bulbs must physically span the contact clips of the housing to seat correctly.
The bulb operates on a 12-volt system, consistent with standard automotive electrical architecture.
The DE3175 designation follows ANSI standards recognized in both the United States and Canada, indicating a standardized specification for voltage, size, and contact type.
Because the DE3175 is an ANSI-standardized type, replacement bulbs from different manufacturers carrying the same designation are generally interchangeable, provided the 31mm length and end-cap contact style are maintained.
Substituting a festoon bulb of a different length, such as a 28mm or 36mm variant, would result in poor contact or failure to seat within the NSX dome light housing.