Description
Constructed with high-durability guide rails and reinforced cable stay-points, this Genuine Bentley unit is designed to handle the high-torque requirements of the rear quarter lift cycle. By choosing the latest "N" revision, you ensure perfect fitment and seamless integration with the vehicle’s convenience control system, maintaining the airtight acoustic seal necessary for high-speed luxury touring.
Tech Tip:
Rear Quarter Synchronization: After installing the 3W0839397N, the rear window must be re-synced with the front door glass to ensure a water-tight seal at the B-pillar join. With the engine running, cycle the window fully up and down three times, holding the switch for 5 seconds at each limit. Warning: Always inspect the lower drainage grommets in the rear quarter cavity during installation; if these are blocked, standing water will prematurely corrode the new regulator's cable housing.



