This rear differential lock actuator is engineered as a direct-fit replacement for specified 4Runner (1996–2010) and FJ models.It replaces OEM part numbers 41450-35030 and 41450-35031 and is designed to integrate with the vehicle's existing drivetrain system.The actuator supports proper of the rear differential lock function, which can assist with traction management during off-road or challenging driving scenarios.Built for , it meets standard performance expectations for this type of service part.