Toyota T100 Dome Light Bulb Size

The Toyota T100 dome light requires a DE3175 bulb size for proper installation within the interior overhead housing. Available data for the specified lighting component covers the range from 1995 to 1998.

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
1995-1998	DE3175	Check Price

Bulb Specifications

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

Other Locations

Additional Notes

The Toyota T100 uses the DE3175 bulb for the dome light across all listed model years, spanning 1995-1998.
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 has a 31mm length, which is the standard measurement used to distinguish it from other festoon bulbs such as the shorter DE3021 or the longer 41mm variants.
The bulb operates at 12 volts, consistent with the standard electrical systems found in passenger vehicles of this type.
The DE3175 designation follows ANSI standards, meaning it is a regulated specification recognized across the United States and Canada, ensuring consistent performance and physical compatibility within those markets.
Because the DE3175 is an ANSI-standardized festoon bulb, aftermarket and OEM replacements from different manufacturers are generally interchangeable as long as they carry the same designation and 31mm length.