The Eaton Fuller Mainshaft Gear, part number 20669, is a genuine OEM transmission component sourced for Eaton Fuller equipped heavy-duty trucks. The mainshaft gear is a critical internal drivetrain component, responsible for transmitting torque through the transmission's main rotating assembly. Sourced directly through Pro Gear and Transmission, part number 20669 is the manufacturer-assigned reference for this gear. Call us to confirm proper fitment for your specific transmission model and application before ordering.
Features
Genuine Eaton Fuller OEM mainshaft gear
Part number: 20669
Designed for heavy-duty truck transmission applications
Direct manufacturer part number reference for accurate sourcing
Sold by Pro Gear and Transmission
