Without a functioning 4WD actuator, your four-wheel-drive system might as well just be spinning your wheels. Responsible for preventing leaks, adding efficiency, optimizing performance and more, 4WD actuators are some of the most vital components in your entire four-wheel-drive system. Unfortunately, despite durability against harsh road and weather conditions, including water intrusion, your 4WD actuator is still vulnerable to wearing down or malfunctioning over time. So, if the time has come to replace your actuator, turn to the selection at AutoAnything to make sure you’re getting the best performance out of your four-wheel drive system.