The Fabco 427-0399 (also listed as 4270399) is a genuine OEM shift shaft cap gasket for Fabco-equipped heavy-duty trucks. This part seals the shift shaft cap on Fabco transfer cases, PTOs, and steerable drive axles, maintaining proper sealing at that junction. The alternate part number 427-399 was the previous designation; 427-0399 is the current number. Sourcing the correct gasket at service time prevents leaks and keeps the shift mechanism properly sealed. Available from Pro Gear and Transmission. Call us to confirm this is the right gasket for your specific Fabco unit before ordering.
Features
Genuine OEM Fabco part, current part number 427-0399 or 4270399
Supersedes former part number 427-399
Seals the shift shaft cap on Fabco driveline components
Applies to Fabco transfer cases, PTOs, and steerable drive axles
Sold by Pro Gear and Transmission