ACI 81931 Window Regulator - Front Left or Rear Left

Manual Window Regulator for Ford Trucks

ACI 81931 is a new manual window regulator built for front left and rear left applications on select Ford trucks and SUVs. It uses a hardened steel gear and meets or exceeds OEM requirements for a direct-fit replacement in manual window systems.

Compatible with 1992-1997 Ford F-350, front left and rear left, plus 1992-1996 Ford Bronco, Ford F-150, and Ford F-250 manual window applications. This ACI Window Regulator line focuses on dependable OE-style replacement parts for door service work.

Key Features

• Manual window regulator for hand-crank window operation
• Hardened steel gear for strength and consistent movement
• New replacement part, not remanufactured
• Meets or exceeds OEM specifications
• Mounting positions: front left and rear left
• Motor not included
• Mounting hardware not included

Detailed Product Overview

ACI 81931 is a body and door repair component for manual window systems in Ford F-150, Ford F-250, Ford F-350, and Bronco applications. The hardened steel gear supports smooth regulator operation, while the OE-level specification helps maintain proper window travel and alignment in the door assembly. If you are replacing a worn or binding regulator on a 1992-1997 Ford F-350 or a 1992-1996 Ford Bronco, this part number provides a direct replacement option for the listed positions.

This part cross-references 11R259 and 82339M for the same application.

Common Problems This Part Can Solve

• Window glass that will not raise or lower by hand crank
• Grinding or slipping from a worn regulator gear
• Uneven or slow window movement in manual door systems
• Binding caused by a damaged internal regulator mechanism
• Loss of proper window support in the door

Installation Notes and Tips

Verify the door position before ordering: this regulator is listed for front left and rear left applications only. Confirm manual window operation, compare the original regulator shape and mounting points, and transfer any reusable components as needed during installation. ACI 81931 is intended for direct replacement in the specified Ford F-150, Ford F-250, Ford F-350, and Bronco fitments.

Quality Assurance

This ACI window regulator is new and built to meet or exceed OEM specifications. The hardened steel gear supports durable operation in manual window service, making it a practical replacement for worn factory regulators.