The 4WD vacuum actuators on Ford’s Electronic Shift-on-the-Fly system engage the axles with vacuum-operated diaphragms.View Full Product Listing
Think TechSmart First: Direct Replacement
The Problem: When the vacuum-operated diaphragms rot or tear, the OE actuators will fail, the hub will stop engaging, and the vehicle will be stuck in 2WD mode.
Our Response: TechSmart's 4WD Vacuum Actuator helps you restore 4WD function to Ford and Lincoln trucks. It's a direct replacement for the failed OE part, which means you'll have an easier install. In total, TechSmart's part covers more than 3.3 million VIO.