Vaico V10-3963 Window Regulator - Rear Right

Rear Right Window Regulator for Audi A8 Quattro and S8

The VAICO V10-3963 is an electric rear right window regulator for select Audi full-size sedans. It is specified without an electric motor and is built for vehicles that use OE reference 4E0 839 462 C.

Key Features

• Electric window regulator for the rear right door
• Supplied without electric motor
• Dimensions: 510 mm length, 480 mm width, 55 mm height
• Weight: 0.790 kg
• Paired article number: V10-3962
• Cross-reference OE numbers: 4E0 839 462 B, 4E0 839 462 C

Product Details

VAICO V10-3963 is a body and door component made for rear right window operation on the Audi A8 Quattro and Audi S8. This window regulator follows the OE application for vehicles equipped with power-operated rear glass and uses the same general fitment profile as the original part number 4E0839462C. VAICO V10-3963 is a practical replacement when the regulator mechanism is worn, noisy, or no longer moves the window smoothly.

VAICO’s VAICO line focuses on OE-style replacement parts for European vehicles, with attention to application matching and part-number accuracy. For buyers searching for an Audi A8 Quattro rear right window regulator or an Audi S8 rear right power window regulator, this part number provides a direct reference point for the correct door-side application.

Vehicle Fitment

• Fits 2003-2010 Audi A8 Quattro, rear right.
• Fits 2003 Audi S8, rear right.
• Fits 2007-2009 Audi S8, rear right.

Common Issues This Part Can Address

• Window glass that will not raise or lower from the rear right door
• Slow, uneven, or jerky window movement
• Grinding or binding from a worn regulator mechanism
• Window dropping inside the door after switch operation
• Failure of the original power window regulator assembly

Installation Notes and Tips

Confirm the OE number, door position, and motor configuration before installation. This part is supplied without the electric motor, so reuse or separately source the correct motor if required by the vehicle setup. Verify the rear right door application on the Audi A8 Quattro or Audi S8 before removing the door trim panel.

Quality Assurance

VAICO V10-3963 is built as an OE-referenced replacement for the listed Audi applications and is identified by the matching OE numbers and paired article reference. Use the part number and fitment details to confirm the correct rear right window regulator before installation.