Motive Gear F10.25BI Differential Carrier Gear Kit Ford 10.25" Open 35-Spline

The Motive Gear F10.25BI is a complete differential carrier gear kit designed for the Ford 10.25-inch open rear axle with a 35-spline configuration. This all-in-one repair kit contains every OEM-specification component needed for a thorough, professional differential service in a single part number — eliminating the time and risk involved in sourcing individual pieces. It transfers rotational motion and torque within the differential carrier assembly, restoring correct fit and function to the rear axle. The kit is well-suited to commercial truck, fleet, and heavy-duty service applications and is commonly referenced as a rebuild kit, overhaul kit, or service kit for the Ford 10.25" axle.

Key Features:

• Complete kit includes all OEM-spec components for a full, professional carrier gear repair in one part number
• Fits the Ford 10.25" open differential carrier — 35-spline axle shaft, 2 pinion gears, 1.5" axle diameter
• Components are matched and tested to function together as a system for consistent performance and reliability
• Manufactured to OEM specifications for correct fit, function, and long service life on commercial and heavy-duty vehicles
• Reduces ordering complexity and eliminates the risk of missing components, minimizing comebacks for shops and fleets
• Saves bay time versus sourcing individual parts, reducing vehicle downtime for fleet operators

Backed by Motive Gear's tradition of racing-proven drivetrain engineering and state-of-the-art manufacturing, this carrier gear kit delivers dependable, OEM-level performance. Fits select 1983–1999 Ford F-250, F-350, and F-Super Duty models equipped with the 10.25-inch rear axle.