Isuzu FRR Dome Light Bulb Size

The Isuzu FRR dome light requires a DE3175 bulb size for proper installation within the interior overhead housing. Available data covers the period from 1996 through 2004 for the specified vehicle 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
2000-2004	DE3175 (Tilt Cab)
1996-1998	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 DE3175 is the sole dome light bulb size listed across all model years of the Isuzu FRR covered by these specifications.
The DE3175 follows the ANSI standard, meaning it conforms to a standardized designation recognized across the United States and Canada.
It is a festoon-type bulb, which is a cylindrical lamp that makes electrical contact through metal caps at both ends rather than through a base pin or wedge.
The bulb measures 31mm in length, which is the figure the "31" in the DE3175 designation refers to.
All listed applications operate on a 12-volt electrical system, consistent with standard automotive low-voltage architecture.
Every listed model year carries a Tilt Cab body style designation, indicating these specifications apply exclusively to that cab configuration of the Isuzu FRR.
The covered model years span 1996-2004, with 1999 not present among the listed entries.
Because the DE3175 specification remains unchanged across all listed years, the bulb is interchangeable between any of those Tilt Cab model years without modification.