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WAI WPR5643LMB Window Motor and Regulator Assembly - Rear LeftOE Quality 60-Day Returns
Part #: WPR5643LMB

WAI WPR5643LMB Window Motor and Regulator Assembly - Rear Left

Rear Left
12 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mercedes-Benz, 260E, 300D, 300E, 300SEL, 300TD, and 300TE
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Rear Left Window Motor and Regulator Assembly

This WAI window motor and regulator assembly is built for the rear left door on select Mercedes-Benz models. It is a direct-fit electrical and glass component for restoring rear window operation on compatible 1986-1989 Mercedes-Benz 300E and related applications.

  • Part number: WPR5643LMB
  • Rear left power window regulator and motor assembly
  • Fits 1987-1989 Mercedes-Benz 260E, rear left
  • Fits 1986-1989 Mercedes-Benz 300E, rear left
  • Fits 1989 Mercedes-Benz 300SEL, rear left
  • Fits 1988-1989 Mercedes-Benz 300TE, rear left
  • Fits 1987 Mercedes-Benz 300D, rear left
  • Fits 1987 Mercedes-Benz 300TD, rear left

Key Features

  • WAI window motor and regulator assembly for rear left power window service
  • Direct fit for Mercedes-Benz 260E, 300E, 300SEL, 300TE, 300D, and 300TD applications listed above
  • Addresses the motor and regulator as a single service assembly
  • Part number WPR5643LMB for ordering and fitment verification

Application Details

Compatible with rear left power window systems on 1986-1989 Mercedes-Benz 300E, 1987-1989 Mercedes-Benz 260E, 1989 Mercedes-Benz 300SEL, 1988-1989 Mercedes-Benz 300TE, 1987 Mercedes-Benz 300D, and 1987 Mercedes-Benz 300TD. Use WPR5643LMB when replacing a worn or non-functioning rear left window motor and regulator assembly on these Mercedes-Benz models.

Common Issues This Part May Address

  • Rear left window does not move when the switch is pressed
  • Window movement is slow, uneven, or stops partway
  • Grinding or binding from the rear door window mechanism
  • Motor runs but the glass does not raise or lower correctly
  • Regulator wear affecting rear left window travel

Installation Notes

Verify the vehicle year, model, and rear left position before ordering. Compare the existing regulator and motor assembly to WPR5643LMB to confirm the mounting style and connector match the original unit. Professional installation is recommended for proper alignment and window operation after replacement.

Quality Assurance

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

This part fits 12 vehicles. Search below:

YearMakeModelPositionNotes
1989Mercedes-Benz260ERear LeftPower Window Regulator and Motor Assembly
1989Mercedes-Benz300ERear LeftPower Window Regulator and Motor Assembly
1989Mercedes-Benz300SELRear LeftPower Window Regulator and Motor Assembly
1989Mercedes-Benz300TERear LeftPower Window Regulator and Motor Assembly
1988Mercedes-Benz260ERear LeftPower Window Regulator and Motor Assembly
1988Mercedes-Benz300ERear LeftPower Window Regulator and Motor Assembly
1988Mercedes-Benz300TERear LeftPower Window Regulator and Motor Assembly
1987Mercedes-Benz260ERear LeftPower Window Regulator and Motor Assembly
1987Mercedes-Benz300DRear LeftPower Window Regulator and Motor Assembly
1987Mercedes-Benz300ERear LeftPower Window Regulator and Motor Assembly
1987Mercedes-Benz300TDRear LeftPower Window Regulator and Motor Assembly
1986Mercedes-Benz300ERear LeftPower Window Regulator and Motor Assembly

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

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