Hella DE3021 Sun Visor Light Bulb

Hella DE3021 Sun Visor Light Bulb

The Hella DE3021 is a 12V, 3W incandescent sun visor light bulb built for vehicles that use a Festoon Cap, T2.25 bulb with an SV7-8 socket type. It is DOT approved and specified for roof-mounted interior lighting applications where a compact, direct-replacement bulb is required.

Compatible With a wide range of vehicles, including Mercedes-Benz G-Class models, Volkswagen Jetta and Amarok, Honda Odyssey, Lexus IS and LS models, and Acura MDX applications. The DE3021 part number is commonly searched for OE-style interior lighting replacement, especially when restoring visor or roof lamp function.

• 12V electrical rating for standard automotive interior circuits
• 3W incandescent output for visor and roof light applications
• Festoon Cap, T2.25 bulb format
• DOT approved for regulated road use
• Direct replacement reference: Hella DE3021

Product Details

Hella develops automotive lighting and electronic components with a long-standing focus on precision workmanship, reliability, and OE-level consistency. The DE3021 follows that approach with a simple incandescent design that matches common sun visor and roof light requirements across many import and domestic vehicles. If you are replacing a failed interior lamp in a Mercedes-Benz G550, Volkswagen Jetta rear lamp, or Honda Odyssey roof light, this bulb is specified for those applications and related fitments.

This part cross-references Hella DE3021 for the same application.

Common Issues This Bulb Can Solve

• Dim or non-working sun visor light
• Burned-out roof or interior courtesy bulb
• Flickering light caused by filament failure
• Loss of cabin illumination in visor-mounted lamp assemblies
• Incorrect bulb size when replacing an SV7-8 style interior bulb

Installation Notes and Tips

Verify the bulb base type, voltage, wattage, and socket style before installation. Match the existing bulb to the Festoon Cap, T2.25 specification and confirm the vehicle uses a 12V, 3W incandescent interior lamp. Handle the bulb carefully during installation to avoid damage to the filament and ensure the socket is clean and properly seated.

Quality Assurance

Hella is a global automotive parts manufacturer with extensive lighting and electronics development experience. The DE3021 is DOT approved and produced to support consistent fitment and dependable interior lighting performance across listed applications.