ACI 81978 Window Regulator - Front Right

Manual Window Regulator for Toyota Front Right

ACI 81978 is a new manual window regulator for the front right door, built with a hardened steel gear for dependable window movement. It meets or exceeds OEM requirements and is listed for manual-window Toyota applications with a vent window.

Use this ACI Window Regulator when replacing a worn or binding front right regulator on select Toyota 4Runner and Toyota Pickup models. The ACI 81978 is a direct-fit manual window regulator for service-focused repairs where the original mechanism no longer raises or lowers the glass smoothly.

Key Features

• Manual window regulator for the front right position
• Hardened steel gear for durable gear engagement
• New replacement part
• Meets or exceeds OEM specifications
• Motor not included
• Mounting hardware not included

Product Details

The ACI Window Regulator line is built for replacement applications where accurate fit and consistent operation matter. Part number 81978 is designed as a manual regulator assembly for the front right door and uses a hardened steel gear to support smooth crank operation. This part cross-references Continental WR40911 for the same application.

Compatible With 1984-1989 Toyota 4Runner, front right, manual with vent window. Compatible With 1984-1988 Toyota Pickup, front right, manual with vent window. The ACI 81978 is a practical replacement for restoring proper glass travel on these Toyota door assemblies.

Common Repair Issues

• Window crank turns but the glass does not move correctly
• Slow, uneven, or stiff manual window operation
• Stripped or worn regulator gear teeth
• Binding or slipping in the front right door window mechanism
• Failure of the original regulator from age or wear

Installation Notes

Verify manual-window, vent-window, and front right fitment before installation. Transfer any required components from the original assembly if needed, since mounting hardware is not included. Inspect the window tracks, guides, and crank handle condition during service to help ensure smooth operation after replacement.

Quality Assurance

ACI lists this regulator as a new part that meets or exceeds OEM requirements. The hardened steel gear is selected for durable operation in routine door-window service.