Continental WR40452 Window Regulator - Rear Left

Rear Left Window Regulator for Mercedes-Benz

Restore smooth rear window operation with this Continental electric window regulator for the rear left position. Built as a specific-fit replacement for select Mercedes-Benz E-Class models, it matches original equipment fit, form, and function for a direct repair on power-window vehicles.

• Electric window regulator for the rear left door
• Specific-fit design for select Mercedes-Benz applications
• Metal construction for dependable operation
• No motor included
• OE-style replacement for straightforward installation
• Built in ISO TS certified facilities

OE-Style Replacement Design

Continental WR40452 is engineered for the rear left door on Mercedes-Benz E320, E430, E300, E55 AMG, and E420 models with power windows. This window regulator is made to deliver the same fit and function as the original part, helping restore proper glass movement when the factory regulator wears out from age, weather exposure, or repeated use. Continental WR40452 is a practical replacement for drivers and technicians looking for a direct-fit repair on the Mercedes-Benz E-Class platform.

This part cross-references Dorman - OE Solutions 740-452 for the same application.

Common Problems It Can Solve

• Window glass that will not raise or lower properly
• Slow, uneven, or noisy rear window movement
• Binding or slipping regulator operation
• Failure caused by worn cables, gears, or internal components
• Loss of rear left power window function on affected Mercedes-Benz models

Installation Notes and Tips

Verify rear left fitment before installation and confirm the vehicle is equipped with power windows. This regulator is for electric operation and does not include a motor, so reuse or replace the motor as needed based on the vehicle’s condition. Always inspect the window tracks, guides, and switches during repair to help ensure proper operation after installation.

Quality Assurance

Continental manufactures this window regulator in ISO TS certified facilities and builds it to match original equipment specifications for fit, form, and function. Continental WR40452 is intended to provide reliable performance for a clean, direct replacement on select Mercedes-Benz rear left applications.