Isuzu FVR Dome Light Bulb Size

The Isuzu FVR dome light requires a DE3175 bulb size for proper installation within the interior overhead lighting fixture. Available data covers a range from 1996 through 2011 for the specified vehicle components.

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
1996-2011	DE3175 (Tilt Cab)

Bulb Specifications

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

Other Locations

Additional Notes

The Isuzu FVR uses the DE3175 bulb for its dome light across all listed model years, spanning 1996-2011.
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 standard for automotive interior lighting systems.
The 31mm figure in the DE3175 designation refers to the length of the bulb, which is the critical fitment factor for festoon bulbs installed in spring-clip dome light housings.
The DE3175 conforms to ANSI standards, indicating it meets a defined specification recognized across the United States and Canada.
The dome light specification applies exclusively to the Tilt Cab body configuration of the FVR, as noted across all listed model years.
The uninterrupted use of the DE3175 across the 1996-2011 model range indicates a consistent dome light housing design throughout that production period.
Festoon bulbs of differing lengths are not interchangeable even when voltage ratings match, as an incorrect length will result in poor contact or failure to seat within the housing clips.