Keystone BM1550118 Rear Left Power Window Regulator Without Motor

The Keystone BM1550118 is an OEM-replacement rear left (driver side) power window regulator designed for the BMW F07 5 Series Gran Turismo. This part, also known as a window lifter, is sold without the motor and is engineered to restore smooth, reliable operation to the rear driver-side window.

Key Features:

• OEM-Style Replacement: Direct-fit replacement engineered to match original equipment specifications
• Power Window Regulator: Compatible with factory power window systems
• Motor Not Included: Regulator (window lifter) only — existing window motor can be reused
• Left Rear (Driver Side): Fits the rear left door position
• OEM Cross-Reference: Replaces BMW OEM part number 51357197923

OEM Part Numbers: 51357197923, 51-35-7-197-923

This regulator is the mechanical assembly responsible for raising and lowering the rear window glass. Installing a quality replacement regulator helps prevent window drop, binding, and the security and weather protection issues that come with a failed unit. The motor is sold and installed separately, allowing reuse of the original motor if it remains functional.