Dorman 749-452 Window Regulator - Rear Left

Reliable Window Regulator for Mercedes-Benz Models

The Dorman 749-452 window regulator is designed for electric window operation in select Mercedes-Benz vehicles. Engineered with durable materials, this part ensures smooth and consistent window movement for your C32 AMG, C55 AMG, C230, C240, C280, C320, and C350 models.

• Gear material constructed from plastic for lightweight and efficient operation
• Bolt-on attachment type for secure mounting
• Metal and plastic frame materials for balanced strength and flexibility
• Electric window operation compatible, motor not included
• Package includes one power regulator unit

Product Details and Specifications

The Dorman 749-452 window regulator features a combination of plastic gears and a mixed metal and plastic frame, providing a reliable mechanism for electric window control. This part is designed to bolt directly onto the door assembly without the need for additional mounting hardware, which is not included. The regulator does not come with a motor or installation instructions, so professional installation or prior experience is recommended. It is specifically engineered to fit a range of Mercedes-Benz models including the C32 AMG, C55 AMG, C230, C240, C280, C320, and C350, ensuring compatibility and proper function.

Common Applications and Problem Resolution

• Replaces faulty or broken window regulators causing window misalignment or failure to move
• Addresses issues with electric window operation where the regulator gear is worn or damaged
• Restores smooth window movement in Mercedes-Benz C-Class and AMG models
• Solves rattling or loose window glass due to regulator frame wear
• Provides a durable replacement for plastic gear components prone to wear over time

Installation Notes and Tips

Installation of the Dorman 749-452 window regulator requires removal of the door panel and careful handling of the window glass. Since mounting hardware and motor are not included, retain original components or source separately. Bolt-on attachment simplifies alignment but ensure all bolts are securely tightened to prevent regulator movement. Professional installation is recommended if unfamiliar with electric window systems.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While specific warranty details for part number 749-452 are not provided, Dorman typically offers limited warranties covering defects in material and workmanship. Verify warranty terms with the supplier or manufacturer prior to installation.