Eaton Fuller 4305659 Main Drive Gear — Replaces 22028

Product Overview

Genuine Eaton Fuller 4305659 main drive gear for supported manual transmissions. Eaton identifies 4305659 as the current replacement for legacy part numbers 22028, 22030, and 4302086 in supported applications.

Technical Identification

• Current sellable part number / SKU: 4305659
• Legacy / replaced numbers: 22028, 22030, and 4302086
• Known input-shaft relationship: Used with S-1659 and S-1660 in supported model-specific groups

Application and Service Notes

Confirm the complete transmission model and serial number, input-shaft assembly, physical tooth count and helix, bearing surfaces, snap-ring and key arrangement, mating countershaft gears, ratio set, and serial range. A valid supersession does not make the gear universal across every Eaton transmission.

Please confirm 4305659, the original 22028/22030/4302086 reference, transmission identification tag, input shaft, physical teeth, mating gears, ratio, and serial range before ordering.

Parts Verification and Ordering Notice

Please confirm the existing part number, component identification, dimensions, specifications, replacement status, position, and application before ordering. Cross-reference numbers, parts catalogs, service manuals, repair manuals, PDF references, figures, and application information are reference material only and may contain errors, omissions, superseded information, or model-specific differences. Please contact All Truck Gears before ordering when the application or interchange is uncertain.

Technical References and OEM Documentation

• Eaton Inforanger — Input Shaft and Main Drive Gear Group Showing 4305659
• Eaton Download Center — Illustrated Parts Lists and Overhaul Manuals