Keystone BM1350102 Front Left Power Window Regulator Without Motor OEM Replacement 51331977609

The Keystone BM1350102 is an OEM-style replacement front left power window regulator engineered for BMW E36 3 Series sedans and hatchbacks (1992–1999). Designed as a direct-fit replacement for the original BMW part number 51331977609, this regulator restores proper window operation without requiring replacement of the existing power motor.

Key Features:

• Motor-free design — regulator mechanism only; retains and reuses your existing power window motor
• Driver side (left) front door application
• Direct OEM replacement — matches the original BMW E36 mounting configuration for a bolt-in fit
• Compatible body styles: Sedan and Hatchback
• Cross-references OEM part number 51331977609

Window regulators are a high-wear component subject to cable fraying, plastic clip breakage, and mechanical fatigue over time. Common failure symptoms include slow or uneven window movement, grinding or clicking noises when operating the switch, or a window that stops mid-travel or drops into the door cavity. Replacing the regulator assembly is the recommended solution when these issues are caused by the mechanism rather than the motor itself.

This Keystone unit is built as a collision repair and OEM-style replacement part, making it an ideal choice for body shops and DIY repairs alike. Note: This listing is for the window regulator only and does not include a power window motor.