Dorman 748-738 Power Window Motor and Regulator Assembly - Rear Left

Dorman 748-738 Rear Left Window Motor and Regulator

This Dorman power window motor and regulator assembly is built as a direct replacement for specific BMW rear left applications. It is engineered and tested to match the original fit, function, and operating performance of the stock regulator on select 1989-1995 BMW 525i, 530i, 540i, 525iT, 535i, and M5 models.

Key Features

• Direct replacement window motor and regulator assembly for the rear left door
• Precision-engineered for OE-style fit and function
• Plastic gear material
• Bolt attachment type for secure mounting
• Regulator included for complete service replacement
• Package contents: 1 regulator and motor assembly
• Cross-reference part numbers include Cardone Reman 47-2120 and Genuine 51341944071

Detailed Description

Dorman 748-738 is a replacement window motor and regulator assembly for BMW rear left power window service. It is designed for 1989-1995 BMW 525i, 1994-1995 BMW 530i, 1994-1995 BMW 540i, 1993 BMW 525iT, 1989-1993 BMW 535i, and 1991-1993 BMW M5 applications. The assembly is precision-engineered to match the stock regulator’s fit, function, and performance, making it a practical OE-style solution for restoring rear window operation on these BMW models. This part number, 748-738, is also a useful reference when sourcing a replacement for the same application.

What It Is Used For

• Repairing a rear left window that will not move up or down
• Replacing a worn or damaged regulator mechanism
• Restoring power window motor operation after slow or inconsistent movement
• Addressing binding, slipping, or noisy window travel
• Replacing a failed assembly on BMW 525i, 530i, 540i, 525iT, 535i, and M5 rear left doors

Installation Notes and Tips

Verify rear left fitment before ordering, since this assembly is specific to select BMW years and models. The unit uses a bolt attachment type, and mounting hardware is not included. Installation instructions are not included, so compare the original regulator and motor assembly, connector style, and mounting points before removal. Confirm the vehicle application against the listed fitment for 1989-1995 BMW 525i, 1994-1995 BMW 530i, 1994-1995 BMW 540i, 1993 BMW 525iT, 1989-1993 BMW 535i, and 1991-1993 BMW M5 rear left positions.

Quality Assurance

Dorman manufactures this replacement assembly to match the original equipment application and subjects it to extensive testing for fit, function, and performance. The design follows the stock regulator layout for the listed BMW applications, helping ensure consistent operation after replacement.