Yukon Gear & Axle ZG F10.5-355-31 Ring & Pinion Gear Set Ford 10.5in 3.55 Ratio 31-Spline

The Yukon Gear & Axle ZG F10.5-355-31 is a USA Standard replacement ring and pinion gear set engineered for the Ford 10.5-inch rear differential. Designed to meet or exceed OEM specifications, this gear set delivers reliable, long-lasting performance for street driving, towing, and off-road use.

Key Specifications:

• Ring Gear Diameter: 10.50 inches
• Gear Ratio: 3.55:1
• Pinion Spline Count: 31 splines
• Ring Gear Bolts: 12
• Rotation: Standard
• Application: Ford 10.5-inch rear axle (1999–2010)

Features & Benefits:

• Manufactured from high-grade steel for superior strength and durability under demanding loads
• Engineered gear tooth surface finish reduces friction and heat buildup, extending service life
• Components are heat-treated to enhance hardness and long-term wear resistance
• Fitment designed to OEM specifications for precise installation and proper gear mesh
• Backed by a standard one-year warranty against manufacturing defects
• Eligible for the Yukon Y.E.S. Plan — a lifetime, comprehensive no-questions-asked protection plan

Yukon Gear & Axle ring and pinion sets undergo rigorous dimensional, material, and fitment testing in two in-house quality labs to ensure every set meets exacting standards. Whether upgrading for larger tires, increased towing capacity, or a performance build, the ZG F10.5-355-31 is a proven, direct-replacement solution for the Ford 10.5-inch axle.