10.5" Ring and Pinion 3.73 Ratio 31 Spline Pinion

The USA Standard Gear ZG F10.5-373-31 is a direct-fit ring and pinion gear set engineered for 1999-2010 Ford 10.5" rear axles. Designed as an OEM replacement, these gears aim to provide a quiet and reliable performance. USA Standard emphasizes rigorous in-house quality testing, ensuring products meet dimensional, material, and fitment standards. This specific set features a 10.50" ring gear diameter, 12 ring gear bolts, a 3.73 gear ratio, and a 31-spline pinion. The manufacturer states that USA Standard gears are designed to exceed OEM specifications while remaining an affordable drivetrain solution, catering to a wide range of popular vehicle models from 1948 to the present. This ring and pinion gear set is compatible with various Ford models including: F-250 Super Duty (1999-2010), F-350 Super Duty (1999-2010), and certain F-150 models (2000-2010). It is also listed as fitting '10 & down Ford 10.5" differentials. All USA Standard Ring and Pinion Gear Sets come with a standard one-year warranty against manufacturing defects.