4WD Front Axle Disconnect Actuator Assembly for Sequoia 2008-2022 600420 This actuator assembly is designed to engage and disengage the front axle in four-wheel drive systems.It is compatible with specified Sequoia models from 2008 to 2022.The unit replaces the part number 600420.It connects directly to the vehicle's front differential and operates via electronic from the drivetrain control module.Installation requires proper alignment and connection to the existing wiring harness.This component plays a critical role in transitioning between two-wheel and four-wheel drive modes.