The S-TEC Transfer Case Actuator - SP00097 is a mechanical device designed for use in vehicles with four-wheel drive systems. It is responsible for engaging and disengaging the transfer case, which is a component that allows power to be distributed to all four wheels. This actuator is specifically designed for use with the S-TEC brand of transfer cases, and is made from durable materials to ensure reliable performance. It is an essential component for maintaining proper functionality of the four-wheel drive system, and is a crucial part of the vehicle's drivetrain.