The Fabco 397-40-4 or 397404 is a genuine OEM shaft-disconnect shift component for heavy-duty truck driveline applications. This part carries the full Fabco product name "Shaft-Disconnect Shift," indicating its role in engaging or disengaging the driveline at a shaft-level disconnect point. Sourced as a genuine Fabco OEM component, it meets original equipment standards for the application it was designed to serve. If you need help confirming this is the correct disconnect shift shaft for your truck, call Pro Gear and Transmission and we'll help you verify the fit.
Features
Genuine Fabco OEM shaft-disconnect shift component
Part number: 397-40-4 or 397404
Functions as a shaft-level disconnect shift part in heavy-duty driveline systems
Sold by Pro Gear and Transmission
