Dorman 742-503 Power Window Motor - Front Left, Front Right, Rear Left or Rear Right

Reliable Window Motor Replacement for Infiniti, Nissan, and Mercury Vehicles

The Dorman 742-503 window motor is designed to restore smooth and efficient power window operation in select Infiniti, Nissan, and Mercury models. This plug-in motor includes a wiring harness and window lift gear, providing a straightforward replacement solution for common window motor failures.

• Compatible with Infiniti, Nissan, and Mercury models including Altima, Maxima, Pathfinder, Frontier, Xterra, and more
• Plug-in design with included wiring harness for easy installation
• Window lift gear included for complete motor functionality
• Does not include regulator or mounting hardware
• Part number 742-503 ensures correct fit and performance

Product Details and Features

The Dorman 742-503 window motor is engineered to meet the electrical and mechanical requirements of various Nissan, Infiniti, and Mercury vehicles such as the Nissan 200SX, Sentra, and Pulsar NX, as well as the Infiniti I30, I35, and QX4. This motor comes with a wiring harness and window lift gear, allowing for a plug-and-play installation without the need for additional wiring modifications. While the regulator and mounting hardware are not included, the motor is designed to integrate seamlessly with existing components. The absence of embedded logic means the motor operates with standard vehicle controls, maintaining compatibility with factory systems.

Common Applications and Problem Resolution

• Restores power window function when the motor fails to operate
• Eliminates window stalling or slow movement issues
• Replaces motors with damaged or worn lift gears
• Addresses intermittent window operation caused by faulty wiring harnesses
• Solves problems related to non-responsive power windows in compatible Infiniti, Nissan, and Mercury models

Installation Notes and Tips

• Designed for plug-in installation with included wiring harness to simplify replacement
• Verify vehicle compatibility with part number 742-503 before installation
• Regulator and mounting hardware must be reused or purchased separately
• Ensure proper alignment of window lift gear during installation to avoid binding
• Disconnect vehicle battery before installation to prevent electrical shorts

Quality Assurance and Warranty Information

Dorman manufactures this window motor to meet or exceed OEM standards for fit, form, and function. The 742-503 part is backed by Dorman's limited warranty, providing coverage against defects in materials and workmanship. This ensures reliable performance and peace of mind when replacing power window motors on compatible Infiniti, Nissan, and Mercury vehicles.