WAI WPR4892LMB Window Motor and Regulator Assembly - Rear Left

Rear Left Window Motor and Regulator Assembly

The WAI WPR4892LMB is a rear left power window regulator and motor assembly for select Ford Super Duty trucks. It is built for direct replacement service on the rear driver-side window system in 1999-2012 Ford F-250 Super Duty and Ford F-350 Super Duty applications.

• Fits 1999-2012 Ford F-250 Super Duty, rear left
• Fits 1999-2012 Ford F-350 Super Duty, rear left
• Window motor and regulator assembly for power window repair
• Direct-fit replacement for the rear left door window mechanism
• WAI part number WPR4892LMB for application matching

Application Details

This assembly is used to restore rear left window movement in Ford F-250 Super Duty and Ford F-350 Super Duty trucks when the original regulator or motor has failed. The WPR4892LMB is a fitment-based replacement for rear left power window service, and the part number WPR4892LMB can be used to confirm the correct application before ordering.

Common Repair Symptoms

• Rear window will not move up or down
• Window moves slowly or stops partway
• Grinding or binding during window operation
• Motor runs but the glass does not respond
• Broken regulator components in the rear left door

Installation Notes

Verify rear left fitment by year, model, and door position before installation. Compare the original assembly to the replacement unit and confirm connector and mounting points match the vehicle. Professional installation is recommended for proper alignment and window operation.

Quality Assurance

WAI manufactures electrical and window system components for replacement service. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.