Dorman 740-959 Window Regulator - Front Right

Overview of Dorman 740-959 Window Regulator

The Dorman 740-959 window regulator is designed for the front right door of select BMW models, including the 1 Series M, 128i, 135i, and 135is. This electric window regulator provides reliable window operation with durable plastic and metal components engineered for precise fitment.

• Compatible with BMW 1 Series M, 128i, 135i, and 135is front right doors
• Electric window operation type without motor included
• Plastic gear and housing materials for smooth movement
• Metal and plastic frame construction for strength and durability
• Bolt-on attachment type for secure mounting
• Maximum lift height of 18 inches and maximum width of 2 inches
• Regulator only; mounting hardware and motor not included

Detailed Product Description

The Dorman 740-959 window regulator is engineered specifically for the front right door of BMW 1 Series M, 128i, 135i, and 135is vehicles. Featuring a plastic gear and housing, this regulator ensures smooth and consistent window movement while reducing noise and wear. The frame combines metal and plastic materials to provide a balance of rigidity and lightweight design. This part is designed for electric window operation but does not include the motor, making it ideal for replacing a faulty regulator mechanism while reusing the existing motor. The bolt-on attachment type allows for straightforward installation using existing mounting points.

Common Applications and Issues Resolved

• Restores proper window movement when the window is stuck or moves unevenly
• Replaces broken or worn-out window regulators causing window rattling or slipping
• Addresses issues with electric window operation in the front right door of compatible BMW models
• Eliminates grinding or clicking noises during window operation
• Prevents window from falling inside the door panel due to regulator failure

Installation Notes and Tips

This window regulator is designed for bolt-on installation in the front right door of BMW 1 Series M, 128i, 135i, and 135is models. Note that the motor and mounting hardware are not included, so existing components must be reused or sourced separately. Professional installation is recommended to ensure proper alignment and secure attachment. Refer to vehicle-specific service manuals for detailed installation procedures.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details for part number 740-959 are not provided, Dorman typically offers limited warranties covering defects in material and workmanship. Buyers should verify warranty terms with the supplier or manufacturer.