Dorman 777-300 Window Motor and Regulator Assembly

Replacement Window Motor Assembly

Dorman 777-300 is a replacement power window motor and regulator assembly for specific Ford F-150 and Lincoln Mark LT applications. It is engineered to match the original fit, function, and performance of the stock window regulator on the listed vehicles.

Compatible With 2010-2014 Ford F-150 and 2010-2014 Lincoln Mark LT, this assembly is built for rear window service where a direct-fit replacement is needed. The Dorman 777-300 uses a bolt-on attachment style, plug-in connection, and includes the motor and wiring harness for a cleaner repair path.

Key Features

• Replacement power window motor and regulator assembly
• Specific fit for 2010-2014 Ford F-150 and 2010-2014 Lincoln Mark LT
• Rear mounting position
• Automatic down operation type
• Motor included with 22 W power rating
• Plug-in connector with 2-wire, 2-terminal design
• Plastic housing, frame, and gear material
• Wiring harness included
• FMVSS compliant for the listed applications

Detailed Description

This Dorman window motor and regulator assembly is precision-engineered for direct replacement on the specified Ford and Lincoln platforms. The assembly is designed around the original equipment layout, with a 3-hole mounting pattern, 100 mm wiring harness length, and bolt-on attachment for a straightforward service replacement. Dorman 777-300 is a practical choice when restoring rear power window operation on a 2010-2014 Ford F-150 or 2010-2014 Lincoln Mark LT.

This part cross-references Monroe Shocks & Struts (e.g., AL3Z1523394A, WLM221) for the same application.

What It Helps Fix

• Rear power window that no longer moves up or down correctly
• Window movement that stops during automatic down operation
• Electrical failure at the motor or connector
• Regulator wear affecting window travel and control
• Fitment issues caused by using a non-specific replacement part

Installation Notes and Tips

Verify the rear mounting position and connector style before installation. This assembly uses a plug-in electrical connection and bolt-on attachment, and the vehicle-specific fit helps reduce modification during replacement. Installation instructions are not included, so compare the original unit, mounting holes, and harness routing before beginning service.

Quality Assurance

Dorman tests this replacement assembly to match the fit, function, and performance of the stock window regulator on the listed vehicles. The application is FMVSS compliant for the covered Ford F-150 and Lincoln Mark LT fitments.