The Eaton Fuller 4303880 is a first-speed mainshaft gear for manual transmissions. It is a direct-fit replacement for Fuller 13210 series and 15210 series transmissions. Cross-references include Eaton Fuller 4303741, 4303879, and 4304494, as well as Mack numbers 3088-4303880 and 3088-4304494, making it a widely used service part across multiple platforms. Sold individually, this is a genuine Eaton Fuller component available from Pro Gear and Transmission. Call us to confirm proper fit for your specific transmission build.
Features
First-speed mainshaft gear for manual transmissions
Fits Fuller 13210 series and 15210 series transmissions
Cross-references: Eaton Fuller 4303741, 4303879, 4304494
Mack cross-references: 3088-4303880, 3088-4304494
Sold as one gear per unit
Genuine Eaton Fuller part number 4303880
Tech Specs
- Part Number: 4303880
- Part Type: First-Speed Mainshaft Gear
- Transmission Type: Manual
- Fits: Fuller 13210 Series, Fuller 15210 Series
- Cross-References: 4303741, 4303879, 4304494, 3088-4303880, 3088-4304494, 3088-4303741, 3088-4304494, 4303880-SP
- Sold As: Each
