Dorman 746-421 Door Lock Actuator Motor - Rear Left or Rear Right

Dorman 746-421 Door Lock Actuator Motor

Dorman 746-421 is a direct replacement door lock actuator motor for specific Ford F-350 rear door applications. It is built for electric operation and engineered to match the stock actuator on the listed vehicle years and positions.

Key Features

• Direct replacement for the original rear door lock actuator
• Electric actuator motor for power door lock operation
• Specific fit for selected Ford F-350 rear left and rear right doors
• Oval connector shape with 2 terminals
• Metal and plastic construction
• Connector and terminal design matches the original application
• Part number 746-421 for easy identification

Detailed Description

This Dorman door lock actuator motor is engineered for the rear door lock system on select Ford F-350 models. It is a specific-fit replacement for the stock actuator and is built to restore normal electric lock function in the rear left or rear right door, depending on the vehicle year and position. This part cross-references Standard Ignition DLA1335 for the same application.

Compatible With Ford F-350 rear door applications, this actuator supports the original oval connector, male blade terminals, and 2-terminal electrical layout. The metal and plastic housing materials are selected for the demands of door lock service, while the direct-fit design helps maintain factory-style operation. Part number 746-421 is also referenced by interchange numbers DLA612, DLA835, and E7TZ3526594A.

Vehicle Fitment

• Fits 1997 Ford F-350, rear right
• Fits 1993 Ford F-350, rear right
• Fits 1991 Ford F-350, rear right
• Fits 1989 Ford F-350, rear right
• Fits 1987 Ford F-350, rear right
• Fits 1994-1996 Ford F-350, rear left
• Fits 1992 Ford F-350, rear left
• Fits 1990 Ford F-350, rear left
• Fits 1988 Ford F-350, rear left

Common Repair Uses

• Restores a rear door lock that no longer responds to the power lock switch
• Addresses slow, weak, or intermittent lock movement
• Helps correct a rear door that will not lock or unlock consistently
• Replaces a worn actuator motor in Ford F-350 rear door assemblies
• Supports repair of electrical lock failure without changing the full door assembly

Installation Notes and Tips

Verify the rear door position before ordering, since fitment differs between rear left and rear right applications. Confirm the oval connector, 2-terminal layout, and electric actuator style against the original part before installation. No wiring harness or mounting hardware is listed with this part, so reuse existing vehicle components as needed.

Quality Assurance

Dorman states that this actuator has undergone extensive quality and safety testing and is engineered as a direct replacement for the stock unit on the listed Ford F-350 applications. That testing focus supports consistent operation in the door lock system.