Yukon Gear & Axle YDAF9-350-31 Ford 9 Inch Dropout Assembly 31 Spline 3.50 Ratio

The Yukon Gear & Axle YDAF9-350-31 is a complete, ready-to-install Ford 9-inch dropout assembly engineered for performance and reliability. Built by expert Yukon technicians, this third member comes fully shimmed and backlashed to factory specifications, eliminating the guesswork of differential setup. Simply install the dropout into your Ford 9-inch housing, bolt on the cover, add gear oil, and you're ready to roll.

This assembly features a nodular iron case that provides superior strength and rigidity compared to standard cast iron, improving power handling while reducing deflection for consistent gear contact and extended service life. The nodular construction offers excellent crack resistance and durability under high-torque conditions, making it ideal for street performance, off-road, and towing applications.

Key Specifications:

• Fits Ford 9-inch differential housings
• 31 spline axle configuration
• 3.50:1 gear ratio
• Complete, fully assembled dropout third member
• Professionally shimmed and backlashed to specification
• Nodular iron case for maximum strength and durability
• Does not include pinion yoke (sold separately)

This dropout assembly eliminates the time-consuming process of setting up ring and pinion gears, making it the perfect solution for rebuilds, gear ratio swaps, or when you need to get back on the road quickly. The Ford 9-inch differential is legendary for its strength and parts availability, commonly found in classic Ford Broncos, F-Series trucks, Mustangs, Falcons, Rancheros, and countless hot rods and custom builds.