Aisin RPAB-013 Window Motor and Regulator Assembly - Rear Left

Aisin Rear Left Window Regulator Assembly

The Aisin RPAB-013 power window regulator with motor is built for the rear left door on select BMW models. It is a direct-fit replacement for vehicles that need a complete window motor and regulator assembly, including 1999-2003 BMW 528i, 525i, 530i, 540i, and M5 applications.

Designed for OE-level fit and function, this Aisin window regulator assembly is engineered to match factory mounting points and operating requirements. The RPAB-013 is a practical choice for restoring rear window movement on BMW 5 Series sedans and the M5.

Key Features

• Complete power window regulator w/ motor assembly
• Rear left position
• OE-standard fitment focus for proper alignment and operation
• Re-engineered to improve original design details
• Built and tested under controlled environmental conditions
• Part number: RPAB-013

Product Details

Aisin’s Power Window Regulator w/ Motor line is developed for replacement applications where factory-style form, fit, and function matter. This RPAB-013 assembly is made to meet OE standards and undergoes quality control checks to help ensure consistent operation. It is compatible with rear left window service on 1999-2003 BMW 528i, 2001-2003 BMW 525i, 2001-2003 BMW 530i, 1999-2003 BMW 540i, and 2000-2003 BMW M5 models. This part cross-references Dorman - OE Solutions (e.g., 748-001) for the same application.

Common Repair Symptoms

• Rear window will not move up or down
• Slow, uneven, or noisy window operation
• Motor runs but the glass does not travel correctly
• Window drops into the door or loses support
• Intermittent rear left window function

Installation Notes

Verify the vehicle’s rear left door configuration before ordering. Compare the original regulator and motor connector style, mounting points, and glass attachment points to the RPAB-013 before installation. Professional installation is recommended for BMW 528i, 525i, 530i, 540i, and M5 rear left window repair to confirm proper window travel and alignment.

Quality Assurance

Aisin manufactures this window regulator assembly to OE standards and subjects it to strict quality control and environmental testing to help confirm form, fit, and function.