Aisin RPAB-005 Window Motor and Regulator Assembly - Rear Left

Aisin Rear Left Window Regulator with Motor

The Aisin RPAB-005 power window regulator with motor is built for rear left door applications on select BMW models. It is engineered to OE standards with controlled manufacturing and validation testing to help deliver proper fit, smooth window movement, and consistent operation.

Compatible With 1992-1998 BMW 318i, rear left; 1992-1995 BMW 325i, rear left; 1996-1998 BMW 328i, rear left; and 1997-1998 BMW M3, rear left. This Aisin window motor and regulator assembly is a direct-fit replacement for vehicles that need restored rear window function.

Key Features

• Power window regulator with motor assembly for the rear left door
• OE-style fit and function for select BMW 3 Series applications
• Manufactured with quality control checks for dimensional accuracy
• Re-engineered process helps refine OE design details
• Tested under environmental conditions to verify operation
• Part number RPAB-005 for ordering and catalog lookup

Detailed Description

Aisin RPAB-005 is a rear left power window regulator and motor assembly designed for BMW 318i, 325i, 328i, and M3 models within the listed years. The Aisin Power Window Regulator w/ Motor product line focuses on OE-level replacement parts that match factory fitment requirements and support reliable window travel in daily use. If you are replacing a worn or failed rear window assembly on a BMW 318i, 325i, 328i, or M3, RPAB-005 provides a direct replacement path with the correct rear left application.

This part cross-references Dorman - OE Solutions 748-740 and Continental WL41035 for the same application.

Common Repair Symptoms

• Rear window will not move up or down
• Window moves slowly or binds in the door
• Motor runs but the glass does not respond
• Grinding, clicking, or uneven window travel
• Intermittent rear left window operation

Installation Notes and Tips

Verify the rear left door application, model year, and connector/track layout before installation. Compare the original regulator and motor assembly to RPAB-005 to confirm mounting points and window track alignment. After installation, cycle the window several times to confirm smooth travel and proper indexing.

Quality Assurance

Aisin manufactures this assembly to meet OE standards and uses strict quality control along with environmental testing to help confirm form, fit, and function. Part number RPAB-005 is built for the listed BMW rear left applications.