Dorman 748-402 Power Window Motor and Regulator Assembly - Front Left

Dorman 748-402 Window Motor and Regulator Assembly

This Dorman window motor and regulator assembly is built as a direct replacement for the front left power window system on select Kia models. It is precision-engineered and tested to match stock fit, function, and performance for the specified application.

Compatible with 2006 Kia Optima, front left; 2007-2010 Kia Optima, front left; and 2008-2010 Kia Magentis, front left. If you are replacing a worn Kia Optima window regulator or a failed Kia Magentis power window motor, part number 748-402 provides the correct OE-style configuration for the listed vehicles.

Key Features

• Direct replacement window motor and regulator assembly
• Precision-engineered for stock-style fit and operation
• Extensively tested for fit, function, and performance
• Plastic gear material
• Bolt-on attachment type
• Regulator included
• Package contents: 1 window regulator with motor

Detailed Description

Dorman 748-402 is a replacement power window motor and regulator assembly for the front left door on select Kia Optima and Kia Magentis vehicles. It is designed to restore proper window movement by replacing the motor and regulator as a matched assembly, helping maintain the original operating characteristics of the factory system. The part number 748-402 is also referenced under ACI 389450 and cross-references 824012G010 and 8245027A for the same application.

This assembly uses a plastic gear and bolt-style attachment, and it does not include mounting hardware or installation instructions. For buyers searching for a 2006 Kia Optima front left window regulator with motor or a 2008-2010 Kia Magentis front left power window motor assembly, this part matches the listed fitment exactly.

What It Helps Fix

• Window that will not raise or lower properly
• Slow, uneven, or noisy window operation
• Failed window motor or worn regulator components
• Window movement that stops partway through travel
• Loss of consistent power window function in the front left door

Installation Notes and Tips

Verify the vehicle year, make, model, and front left position before ordering. For the 2006 Kia Optima, confirm that the 5th digit of the VIN is E. Because mounting hardware and instructions are not included, transfer any reusable factory hardware as needed and follow the vehicle service procedure for door trim removal and regulator alignment.

Quality Assurance

Dorman states that this replacement assembly is extensively tested to match the fit, function, and performance of the original window regulator on the listed vehicles. It is engineered as an OE-style replacement for the specified Kia Optima and Kia Magentis applications.