The Eaton Fuller 4300858 is a 1st speed mainshaft gear designed for Fuller manual transmissions. Cross-references include Mack numbers 3088-4300858 and 3088-4300859, as well as Fuller alternate numbers 4300859 and 23659, making it a broadly applicable replacement across multiple fleet configurations. Additional cross-references on file include 3134964, 35530627, 4300858-SP, and ZBF4300858. Sold individually. Pro Gear and Transmission carries genuine Eaton Fuller drivetrain components to keep your trucks running. Call us to confirm proper fit for your specific transmission model and application.
Features
1st speed mainshaft gear for Fuller manual transmissions
Sold individually (one gear per unit)
Cross-references to Fuller 4300859 and 23659
Mack cross-reference numbers: 3088-4300858 and 3088-4300859
Additional cross-references: 3134964, 35530627, 4300858-SP, ZBF4300858
