Motive Gear F10.5-373PK Ring & Pinion Set, 31 Spline for Ford 10.5" -Fit for 12-Bolt Ford 10.5 Differential –3.73 Ratio, Compatible for 1999-2007 Ford F-250, F-350, Excursion –Replaces YG F10.5-373-31

Upgrade Your Ford 10.5" Differential with Motive Gear 3.73 Ring & Pinion SetEngineered for durability and precision, this Motive Gear 3.73 ratio ring & pinion set is designed for Ford 10.5" differentials. Built from high-quality 8620 steel, it ensures smooth operation, improved performance, and long-lasting reliability.⚙ Features & Benefits:Designed for Ford 10.5" differential with a 3.73 ratio for optimized torque and efficiency.Made from 8620 steel, offering high wear resistance and durability for demanding applications.31-spline pinion with a 1.94” shaft diameter for secure engagement and maximum power transfer.12-bolt ring gear with a 41-tooth count ensures precise fitment and smooth operation.Standard rotation design for factory-style performance and easy installation.🚗 Vehicle Compatibility:2000-2005 Ford Excursion2004-2007 Ford F-150 & 2004 Ford F-150 Heritage1999-2007 Ford F-250 & F-250 Super Duty1999-2007 Ford F-350 & F-350 Super Duty2004-2007 Ford Lobo🔄 Replaces OEM Part Numbers:USA Standard Gear: 36273, ZG F10.5-373-31American Axle: 3L1Z4209AAJ, 8C3Z4209FYukon Gear & Axle: YG F10.5-373-31EXCEL from Richmond: F105373A🛡 Warranty & Why Choose Motive Gear?Backed by a 1-year or 50,000-mile warranty, Motive Gear offers superior quality and reliability for daily driving, towing, and off-road applications. Designed for enthusiasts and professionals alike, this gear set ensures maximum durability and performance.

• ✅ High-Performance Gear Set – Designed for Ford 10.5" differential with a 3.73 ratio, delivering optimal torque and fuel efficiency for improved towing and highway performance.
• ✅ Durable 8620 Steel Construction – Made from premium 8620 steel for superior strength, enhanced wear resistance, and long-lasting durability under heavy-duty applications.
• ✅ Precision-Cut 31-Spline Pinion – Features an 11-tooth pinion gear with a 1.94” shaft diameter and 12-bolt ring gear, ensuring accurate fitment and smooth power transfer.
• ✅ Vehicle Compatibility – Designed for 1999-2007 Ford F-250, F-250 Super Duty, F-350, F-350 Super Duty, 2000-2005 Ford Excursion, 2004-2007 Ford F-150 & Lobo, and 2004 F-150 Heritage.
• ✅ Direct OEM Replacement – Interchanges with USA Standard Gear 36273, American Axle 3L1Z4209AAJ, Yukon Gear YG F10.5-373-31, and EXCEL F105373A for seamless installation and factory performance.