Dorman 740-954 Window Regulator - Front Left

Reliable Front Left Window Regulator for Mercedes-Benz CLS Models

The Dorman 740-954 window regulator is designed specifically for the front left door of select Mercedes-Benz CLS models, including the CLS55 AMG, CLS63 AMG, CLS500, and CLS550. This electric window regulator offers a durable construction to ensure smooth window operation without the motor included.

Key Features of the Dorman 740-954 Window Regulator

• Compatible with Mercedes-Benz CLS55 AMG, CLS63 AMG, CLS500, and CLS550 front left doors
• Electric window operation type for seamless control
• Durable plastic gear and housing materials for reliable performance
• Metal and plastic frame construction for strength and stability
• Bolt-on attachment type for straightforward installation
• Includes one window regulator without motor or mounting hardware

Detailed Product Description

The Dorman 740-954 window regulator is engineered to replace the front left window regulator in Mercedes-Benz CLS models such as the CLS55 AMG, CLS63 AMG, CLS500, and CLS550. Featuring a plastic gear and housing, this part balances lightweight design with durability. The frame combines metal and plastic materials to provide structural integrity while maintaining ease of installation. This regulator supports electric window operation but does not include the motor or mounting hardware, allowing for compatibility with existing components. The bolt-on attachment type simplifies the replacement process, making it a practical choice for professional repairs or DIY maintenance.

Common Issues Addressed by This Window Regulator

• Window failing to move up or down smoothly
• Intermittent or no response from the electric window switch
• Grinding or clicking noises during window operation
• Window becoming stuck in one position
• Worn or broken window regulator components causing window misalignment

Installation Notes and Tips

Installation of the Dorman 740-954 window regulator requires removal of the door panel and disconnection of the existing regulator. Since mounting hardware is not included, retain original bolts or source compatible fasteners. The bolt-on design facilitates alignment and secure attachment. Ensure the electric motor is tested separately as it is not included with this part. Follow vehicle-specific service manuals for detailed instructions to avoid damage to door components.

Quality Assurance and Warranty

Dorman window regulators are manufactured to meet or exceed OEM standards for fit and function. While this product does not include a motor or mounting hardware, it is built with quality plastic and metal materials to provide reliable service life. Please refer to Dorman’s warranty policy for coverage details on this part number 740-954.