The Eaton Fuller Auxiliary Mainshaft, part number 4300312, is a direct OEM replacement shaft for manual auxiliary transmissions. At 16.125 inches in length, this shaft is designed to fit the Fuller 14710, 15710, and 16710 Series transmissions, covering a broad range of heavy-duty truck applications. Cross-reference numbers include 22970, S-11337, and Mack equivalents 3088-4300312 and 4333-1685634C1, as well as Navistar numbers 1685634C1 and 1685949C1. Sold individually by Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission build.
Features
Fits Fuller 14710, 15710, and 16710 Series auxiliary transmissions
Shaft length: 16.125 inches
Direct OEM part number 4300312, also known as Fuller 22970
Cross-references Mack 3088-4300312, Navistar 1685634C1, Navistar 1685949C1, and Volvo FUL4300312
Sold as a single unit
Genuine Eaton Fuller auxiliary transmission component
Tech Specs
- Length: 16.125 in.
- Application: Fuller 14710 Series, 15710 Series, 16710 Series auxiliary transmissions
- OEM Part Number: 4300312
- Alternate OEM Number: 22970
- Cross-References: 3088-4300312, 4333-1685634C1, 4333-1685949C1, 1685634C1, 1685949C1, S-11337, FUL4300312
- Sold as: Each
