The Standard Ignition TCA107 4WD Actuator is a direct fit replacement part engineered to restore proper four wheel drive 4WD functionality in select Ford and Lincoln models Designed to meet or exceed original equipment OE specifications this actuator ensures seamless engagement of the vehicle s front hubs facilitating reliable 4WD operation The actuator features a vacuum operated diaphragm that effectively engages the axles during 4WD operatioddressing common issues such as failure to engage hubs and vehicles being stuck in 2WD mode due to damaged OE units with rotted or torn diaphragms By replacing faulty actuators with the TCA107 fleet operators can enhance vehicle performance reduce downtime and maintain optimal operational efficiency This component is compatible with various Ford and Lincoln models including the F 150 Expedition Navigator and others providing a versatile solution for fleet maintenance Utilizing the TCA107 actuator helps ensure that vehicles are equipped to handle diverse driving conditions thereby supporting the operational demands of commercial fleets