Keystone AC1550104 Rear Left Power Window Regulator with Motor

The Keystone AC1550104 is an OEM-replacement rear left (driver side) power window regulator with integrated electric motor, designed as a direct-fit replacement for the Acura MDX (2007–2013). This assembly replaces OEM part number 72750-STX-A02 (also referenced as 72750STXA01) and uses the Partslink number AC1550104.

Key Features:

• Power operation — electrically driven by the included integrated motor
• 2-pin motor connector matches the factory wiring harness
• Left (driver) rear door position — direct OEM fit, no modification required
• Engineered to match original equipment shape, mounting points, and dimensions for seamless installation
• Replaces worn or failed regulators exhibiting slow movement, grinding noise, or window drop into door cavity

Part Number Cross-Reference:

• Partslink: AC1550104
• OEM / Honda-Acura: 72750-STX-A02, 72750STXA01
• Dorman: 751-034

Installation follows standard window regulator service procedure: remove the door trim panel and water shield, unbolt the window glass from the regulator, remove the regulator mounting fasteners, and unplug the motor electrical connector. Disconnect the vehicle battery before beginning any electrical work.