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Part #: AC820

Marelli AC820 Window Regulator - Rear Right

Rear Right
⚙️ 24 vehicles fit this part
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Select your vehicle to confirm fitment
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✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi, A4, A4 Quattro, allroad, and S4
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Reliable Window Regulator for Audi A4 and S4 Models

The Marelli AC820 window regulator is designed specifically for Audi vehicles including the A4, A4 Quattro, allroad, and S4 models. This replacement part ensures smooth and consistent window operation, restoring functionality to your vehicle's door system.

  • Compatible with Audi A4, A4 Quattro, allroad, and S4 models
  • OEM-quality window regulator for precise fit and performance
  • Part number AC820 for easy identification and ordering
  • Durable construction to withstand regular use
  • Engineered to meet original equipment specifications

Product Details and Compatibility

The Marelli AC820 window regulator is a direct replacement part designed to fit the door assemblies of Audi A4, A4 Quattro, allroad, and S4 vehicles. This component is essential for controlling the up and down movement of the window glass. Manufactured to meet strict quality standards, the AC820 ensures reliable operation and longevity. Its design aligns with the original equipment manufacturer’s specifications, providing a seamless fit without modification.

Common Applications and Problem Resolution

  • Restores window movement when the regulator fails or becomes stuck
  • Eliminates window rattling or uneven movement
  • Replaces worn or broken window regulator cables or mechanisms
  • Addresses issues with windows not staying in position
  • Fixes power window malfunctions related to regulator failure

Installation Notes and Tips

Installation of the Marelli AC820 window regulator requires removal of the door panel and careful handling of the window glass. It is recommended to disconnect the vehicle battery before beginning to avoid electrical issues. Align the regulator properly to ensure smooth window operation and test functionality before reassembling the door panel. Professional installation is advised if unfamiliar with door component repairs.

Quality Assurance and Warranty

Marelli manufactures the AC820 window regulator to meet or exceed original equipment standards. While specific warranty details are not provided, Marelli parts typically come with a limited warranty covering defects in materials and workmanship. This ensures confidence in the durability and performance of the replacement window regulator for your Audi A4, A4 Quattro, allroad, or S4.

This part fits 24 vehicles. Search below:

YearMakeModelBody TypePositionNotes
2016AudiallroadRear Rightw/o Motor
2015AudiA4Rear Rightw/o Motor
2015AudiA4 QuattroRear Rightw/o Motor
2015AudiallroadRear Rightw/o Motor
2015AudiS4Rear Rightw/o Motor
2014AudiA4Rear Rightw/o Motor
2014AudiA4 QuattroRear Rightw/o Motor
2014AudiallroadRear Rightw/o Motor
2014AudiS4Rear Rightw/o Motor
2013AudiA4Rear Rightw/o Motor
2013AudiA4 QuattroRear Rightw/o Motor
2013AudiallroadRear Rightw/o Motor
2013AudiS4Rear Rightw/o Motor
2012AudiA4Rear Rightw/o Motor
2012AudiA4 QuattroRear Rightw/o Motor
2012AudiS4Rear Rightw/o Motor
2011AudiA4Rear Rightw/o Motor
2011AudiA4 QuattroRear Rightw/o Motor
2011AudiS4Rear Rightw/o Motor
2010AudiA4Rear Rightw/o Motor
2010AudiA4 QuattroRear Rightw/o Motor
2010AudiS4Rear Rightw/o Motor
2009AudiA4SedanRear Rightw/o Motor
2009AudiA4 QuattroSedanRear Rightw/o Motor

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.