Main Shaft Fiat

This Main Shaft Assembly (OEM # 5102795, 5102788) is a critical component in Fiat tractor drivetrains, designed to transfer power from the engine to the gearbox and PTO systems. Crafted from heat-treated alloy steel, the shaft withstands extreme torsional stress, heavy loads, and harsh operating conditions common in agricultural and industrial use. Precision-machined splines and hardened surfaces ensure seamless engagement with gears, bearings, and synchronizers, maintaining smooth power delivery during tasks like plowing, tilling, or hauling. OEM-grade engineering guarantees exact dimensions and compatibility, minimizing wear on connected components and maximizing drivetrain longevity.

The assembly includes two part numbers (5102795 and 5102788), which may correspond to variations for different Fiat tractor models, production years, or gearbox configurations. The hardened steel construction resists bending, shearing, and fatigue, making it ideal for tractors operating in rugged terrain or under variable loads. Whether replacing a worn shaft or upgrading during a transmission overhaul, this component restores factory-level performance and reliability. Applications include Fiat tractors used in fieldwork, construction, or forestry, where consistent power transfer is essential.

Rigorously tested to meet Fiat’s OEM standards, this main shaft assembly ensures durability and efficiency. Proper installation requires adherence to torque specifications, alignment checks, and lubrication of splines with high-quality grease. Always verify compatibility using your tractor’s model number, VIN, or consult the service manual. Avoid aftermarket substitutes to prevent drivetrain failure and ensure optimal safety.