The Eaton Fuller A-4957 or A4957 is a complete countershaft auxiliary assembly designed for use in Eaton Fuller auxiliary transmissions. This assembly covers the countershaft function within the auxiliary section of the transmission, delivering the gear-to-gear transfer needed to maintain proper drivetrain operation. Cross-references include A-4725, 19660, 19222, 19662, Navistar 591903C1, and 591903C2, among others. Sold by Pro Gear and Transmission as a genuine Eaton Fuller part. Call us to confirm proper fit for your specific transmission application before ordering.
Features
Genuine Eaton Fuller countershaft auxiliary assembly
Complete assembly unit, part number A-4957 or A4957
Cross-references: A-4725, 19660, 19222, 19662
Navistar interchange numbers: 591903C1 and 591903C2
Sold individually as a single unit
Available from Pro Gear and Transmission
