The Eaton Fuller Countershaft Auxiliary Assembly, part number A-4520 or A4520, is a genuine Eaton Fuller transmission component designed for the auxiliary section of Fuller heavy-duty transmissions. The countershaft assembly is a core internal component that supports gear engagement and power transfer through the auxiliary gearbox. Pro Gear and Transmission carries genuine Eaton Fuller drivetrain parts for professional fleet and shop applications. Not sure this is your part? Give us a call to confirm proper fit for your transmission before ordering.
Interchanges:
- 64980
- EF64980
- Navistar 499692C1
Features
Genuine Eaton Fuller OEM countershaft auxiliary assembly
Part number A-4520 or A4520
Designed for the auxiliary section of Fuller heavy-duty transmissions
Direct OEM replacement for countershaft assembly service
Sold by Pro Gear and Transmission
