WAI WPR4840LMB Window Motor and Regulator Assembly - Rear Left

Rear Left Window Motor and Regulator Assembly

The WAI WPR4840LMB is a rear left power window regulator and motor assembly for select Acura RL models. It is built for direct replacement service on 1998-2004 Acura RL, rear left applications, making it a focused solution for restoring rear window operation.

• Part number: WPR4840LMB
• Compatible with 1998-2004 Acura RL, rear left
• Power window regulator and motor assembly
• Application-specific fitment for rear left door service
• Supports repair of the window lifting and drive mechanism

Application Details

This WAI window motor and regulator assembly is intended for the rear left position on 1998-2004 Acura RL vehicles. If your Acura RL rear window is slow, stuck, or no longer responds to switch input, WPR4840LMB provides the replacement assembly needed to restore normal glass movement. The part number WPR4840LMB is the reference to verify before ordering, especially when matching rear left door fitment on Acura RL models.

Common Issues It Can Solve

• Rear window glass will not move up or down
• Window movement is uneven or binds during travel
• Motor runs but the glass does not respond
• Regulator mechanism is worn, damaged, or broken
• Rear left power window operation has become intermittent

Installation Notes

Confirm rear left door fitment before installation and compare the original assembly to WPR4840LMB for connector, mounting, and regulator layout match. Inspect the window tracks, guides, and switch circuit during replacement so the new assembly can operate correctly after installation.

Quality Assurance

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