Eaton Fuller 4303121 Countershaft Drive Gear

Product Overview

Genuine Eaton Fuller 4303121 countershaft drive gear for supported manual transmissions.

Technical Identification

• Replaces: 4305080
• Catalog example: FRO-16210C; quantity 2
• Known kit usage: K-3722

Application and Service Notes

Confirm the transmission, countershaft arrangement, physical tooth count and helix, bore/key fit, mating main-drive gear, quantity, ratio set, and serial range. Inspect the matched pair and mating gear.

Please confirm 4303121, the transmission tag, physical teeth, countershaft configuration, mating gear, quantity, and ratio before ordering.

Technical References and OEM Documentation

• Eaton Inforanger — FRO-16210C Countershaft Group
• Eaton Download Center