Dorman 742-278 Window Motor - Front Left

Dorman 742-278 Window Motor for Mustang

Dorman 742-278 is a power window lift motor for select Ford Mustang models. It is precision-engineered to match the fit and performance of the original motor, making it a direct replacement for the front left window system on 2005-2009 Ford Mustang applications.

Key Features

• Direct replacement window motor for the front left position
• Precision-engineered to match original fit and operating performance
• Window lift gear included for the repair assembly
• Hardwired/plug-in design for application-specific connection styles
• Fits 2005-2009 Ford Mustang, front left
• Part number 742-278 for easy identification and ordering

Detailed Description

This Dorman window motor is built for 2005-2009 Ford Mustang front left window repairs where the original motor has worn out or stopped working correctly. The design follows the original equipment layout for the vehicle, helping restore normal window movement without changing the intended fitment. Dorman 742-278 also includes the window lift gear, which supports a complete motor-side repair for the specified application. This part cross-references Cardone Reman 42-3070 for the same application.

Common Problems It Can Help Solve

• Window glass that will not move up or down
• Slow, weak, or intermittent front left window operation
• Grinding or slipping from a worn motor or lift gear
• Motor failure caused by age, wear, or repeated use
• Restoring proper power window function on a Ford Mustang

Installation Notes and Tips

Verify the vehicle year, make, model, and front left position before installation. This window motor does not include the regulator, mounting hardware, or wiring harness, so reuse or source the required related components as needed for the repair. Because the unit is hardwired/plug-in, confirm the connector style and wiring arrangement on the vehicle before installation. For best results, inspect the window regulator and track components for wear before completing the job.

Quality Assurance

Dorman designs this replacement window motor to match the original fit and performance expected for the listed Ford Mustang applications. It is built as a direct-fit service part for 2005-2009 Mustang front left window repairs and is identified by part number 742-278.