Dorman 740-455 Window Regulator - Rear Right

Overview of Dorman 740-455 Window Regulator for Mercedes-Benz

The Dorman 740-455 window regulator is designed for select Mercedes-Benz models, providing reliable electric window operation. This power window regulator is engineered to replace faulty or worn regulators in vehicles such as the 300SD, 300SEL, and 560SEL.

• Compatible with Mercedes-Benz 300SD, 300SDL, 300SE, 300SEL, 350SD, 350SDL, 380SE, 380SEL, 420SEL, 500SEL, and 560SEL
• Electric window operation type for smooth and consistent performance
• Durable metal and plastic frame construction for strength and longevity
• Plastic gear material designed for quiet and efficient movement
• Bolt-on attachment type for secure installation
• Includes one power regulator unit; mounting hardware and motor not included

Detailed Product Description

The Dorman 740-455 window regulator is a direct replacement part engineered specifically for various Mercedes-Benz sedans and coupes. Featuring a combination of metal and plastic frame materials, this regulator balances durability with lightweight design. The plastic gear material reduces noise and wear during window operation. Designed for electric window systems, this regulator does not include a motor, allowing compatibility with existing vehicle components. The bolt-on attachment type ensures a secure fit within the door assembly, maintaining factory specifications.

Common Applications and Problem Resolution

• Restores smooth electric window movement in Mercedes-Benz 300SD and 300SEL models
• Replaces broken or worn window regulators causing window misalignment or jamming
• Eliminates window rattling or slipping due to damaged gear components
• Addresses issues with windows that fail to stay in position or move unevenly
• Provides a reliable solution for power window failures in 380SE and 560SEL vehicles

Installation Notes and Tips

Installation of the Dorman 740-455 window regulator requires removal of the door panel and disconnection of the existing regulator. Since mounting hardware and motor are not included, retain original components or source replacements as needed. The bolt-on attachment type facilitates alignment and secure fastening. Professional installation is recommended to ensure proper window operation and avoid damage to door components. Installation instructions are not included with this part.

Quality Assurance and Warranty Information

Dorman manufactures the 740-455 window regulator to meet or exceed OEM standards for fit and function. The combination of metal and plastic materials is selected to provide durability and reliable performance over time. While installation instructions and mounting hardware are not included, the part is designed for compatibility with factory components. Warranty coverage details should be confirmed at the time of purchase.