Dorman 740-454 Window Regulator - Rear Left

Reliable Electric Window Regulator for Mercedes-Benz Models

The Dorman 740-454 window regulator is designed for electric window operation in select Mercedes-Benz vehicles. Engineered with a combination of metal and plastic frame materials, this bolt-on regulator offers a durable solution for restoring smooth window functionality.

• Compatible with Mercedes-Benz 300SD, 300SDL, 300SE, 300SEL, 350SD, 350SDL, 380SE, 380SEL, 420SEL, 500SEL, and 560SEL models
• Electric window operation type for seamless power window control
• Durable plastic gear material for reliable performance
• Bolt-on attachment type for straightforward installation
• Includes one power regulator unit; mounting hardware and motor not included
• Frame constructed from both metal and plastic components for strength and flexibility

Product Details and Specifications

The Dorman 740-454 window regulator is specifically designed to replace faulty or worn electric window regulators in various Mercedes-Benz sedans and coupes. Its plastic gear material reduces noise and wear, while the metal and plastic frame construction balances durability with weight considerations. This part is a bolt-on type, allowing for a secure fit without modification. Note that the motor is not included, so this regulator is intended for use with existing or separately purchased motors. Installation instructions are not provided, so professional installation or prior experience is recommended.

Common Applications and Problem Resolution

• Restores smooth and reliable electric window movement in Mercedes-Benz 300SD, 300SDL, 300SE, 300SEL, 350SD, 350SDL, 380SE, 380SEL, 420SEL, 500SEL, and 560SEL models
• Replaces broken or stripped plastic gears causing window jams or slow operation
• Addresses window regulator frame damage or bending that impedes window alignment
• Solves issues with windows that fail to stay in position or fall unexpectedly
• Provides a replacement for worn regulators without motor failure

Installation Notes and Tips

This window regulator is designed for bolt-on installation, which simplifies the replacement process. Since mounting hardware and motor are not included, ensure you have the necessary components before beginning installation. It is recommended to disconnect the vehicle battery before working on the power window system to avoid electrical hazards. Professional installation is advised if you are unfamiliar with window regulator replacement procedures.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-454 window regulator undergoes quality checks to ensure reliable operation in compatible Mercedes-Benz vehicles. Please refer to Dorman's warranty policy for specific coverage details related to this part number.