The Eaton Fuller Countershift Gear, part number 20664, is a genuine Eaton Fuller transmission component designed for use in Eaton Fuller manual transmission assemblies. The countershift gear is a core drivetrain element, transferring rotational force between the input and output shafts through the countershaft cluster. Eaton Fuller transmissions are widely used across Class 6-8 commercial trucks, and sourcing the correct countershift gear by exact part number is critical to a proper rebuild or repair. Pro Gear and Transmission carries genuine Eaton Fuller drivetrain components. Call us to confirm this part is the right fit for your specific transmission model before ordering.
Features
Genuine Eaton Fuller countershift gear
Part number: 20664
Designed for Eaton Fuller manual transmission assemblies
Countershaft gear transfers drive between input and output shafts
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