Dorman 741-407 Power Window Motor and Regulator Assembly - Rear Left

Dorman Rear Left Window Motor and Regulator

Dorman 741-407 is a replacement power window motor and regulator assembly for select Mercedes-Benz models with rear left fitment. It is precision-engineered and tested to match the stock regulator’s fit, function, and performance on the listed applications, including Mercedes-Benz E320, E420, E500, and several 300-series models.

Key Features

• Replacement power window motor and regulator assembly for rear left door applications
• Precision-engineered for direct fit on listed Mercedes-Benz vehicles
• Extensively tested for fit, function, and performance alignment with the original assembly
• Plastic gear material
• Bolt attachment type for installation on the specified applications
• Regulator included
• Package contents: 1 regulator and motor assembly

Detailed Description

This Dorman window motor and regulator assembly, part number 741-407, is built for rear left window service on select Mercedes-Benz E320, E420, E500, 300D, 300E, 300TE, 400E, 500E, 260E, 300SEL, and 300TD models. It is engineered to match the original window regulator’s operating characteristics, making it a direct replacement for vehicles that need restored rear window movement and consistent glass travel. This part cross-references ACI 88004 for the same application.

Common Repair Symptoms

• Rear left power window does not move up or down
• Window moves slowly, unevenly, or stops partway
• Grinding or slipping noise from the door window mechanism
• Broken regulator components or worn motor operation
• Window glass no longer tracks correctly in the door

Installation Notes and Tips

Verify rear left fitment before ordering, since this assembly is specific to the listed Mercedes-Benz years and models. Mounting hardware is not included, and installation instructions are not included. Confirm the bolt attachment points, window track alignment, and electrical connector condition during replacement. This part number 741-407 is intended for the exact applications shown in the fitment data.

Quality Assurance

Dorman tests this replacement assembly to align with the original equipment part’s fit, function, and performance on the specified vehicles. The design uses a plastic gear material and a regulator-included configuration to support a direct replacement approach for the listed Mercedes-Benz rear left window applications.