Aisin RMK-731 Window Motor - Rear Left

Aisin RMK-731 Rear Left Window Motor

The Aisin RMK-731 power window motor is a standard replacement for the rear left door on select Kia Optima models. Built to OE standards and validated through controlled environmental testing, it is designed for accurate fitment and consistent window operation.

Key Features

• Specific-fit power window motor for the rear left position
• Standard replacement design for direct service use
• OE-standard manufacturing for fit, form, and function
• Re-engineered process to support improved OE-style design performance
• Regulator not included
• 2-pin application noted in fitment details
• Works with power window systems using auto up/down function

Product Details

This Aisin power window motor, part number RMK-731, is engineered for 2011-2016 Kia Optima rear left applications. It is a specific-fit replacement made to match the original mounting and operating requirements of the vehicle’s window system. Aisin’s manufacturing process focuses on OE-level dimensions and testing conditions that simulate real-world environmental exposure, helping maintain proper window movement and dependable operation. This part cross-references OE number 83450-2T000 for the same application.

Common Problems It Can Help Solve

• Rear window does not move when the switch is pressed
• Slow, weak, or intermittent window operation
• Motor noise without normal glass movement
• Window stops partway or fails to respond consistently
• Replacement needed after electrical motor wear or failure

Installation Notes and Tips

Fits 2011-2016 Kia Optima, rear left. Confirm the 2-pin connector style and auto up/down configuration before installation. This part does not include the regulator, so inspect the existing regulator assembly for wear, binding, or damage before reassembly. Verify electrical connections and window alignment after installation to ensure smooth operation.

Quality Assurance

Aisin manufactures this window motor to meet OE standards and applies strict quality control throughout production. The RMK-731 is built as a direct replacement for the specified Kia Optima application and is tested under conditions intended to reflect environmental stress and everyday use.