The Eaton Fuller Shift Lever Isolator, part number 4000391, is a genuine Eaton Fuller transmission component designed to isolate the shift lever from vibration and harshness transferred through the drivetrain. This isolator serves as a critical interface between the shift lever and the transmission housing, helping maintain smooth, consistent gear selection in Eaton Fuller-equipped trucks. Pro Gear and Transmission carries genuine Eaton Fuller parts sourced to match OEM specifications. If you need help confirming this is the correct isolator for your transmission, give us a call.
Features
Genuine Eaton Fuller part, number 4000391
Designed to isolate the shift lever from drivetrain vibration
Direct-fit replacement for Eaton Fuller transmission applications
Helps maintain smooth, consistent gear selection
Sold by Pro Gear and Transmission
