Motive Gear Differential Bearing Kit

Motive Gear Differential Bearing Kits: Everything You Need for a Proper Rebuild

When it comes to rebuilding a differential the right way, the bearing kit you choose sets the foundation for everything else. Motive Gear has been engineering precision drivetrain components for over 65 years, and their differential bearing kits reflect that depth of expertise — delivering the hardware, consumables, and confidence that both professional installers and determined DIYers need to do the job once and do it right.

Three Tiers of Kit Coverage

One of Motive Gear's strengths in this category is offering distinct kit configurations to match the scope of your rebuild:

• Standard Kits include front and rear pinion bearings, carrier bearings, pilot bearings (where applicable), pinion seal and nut, gear marking compound, crush sleeve, brush, thread locking compound, and a cover gasket or RTV — everything to support a straightforward ring-and-pinion swap.
• Master Kits build on the Standard Kit by adding ring gear bolts, pinion shims, and carrier shims — giving builders the full set of adjustment hardware needed for a precise gear setup.
• Super Kits include all Master Kit contents but upgrade the bearings to Timken-brand tapered roller bearings, the trusted choice for high-load drivetrain applications.

Broad Application Coverage Across Domestic Platforms

Motive Gear's bearing kits span an impressive range of differential housings, covering front and rear axles across nearly three dozen differential case design applications. Whether you're rebuilding a classic Ford 9-inch third member, a GM 8.875" 12-bolt, a GM 10.5" 14-bolt, a Ford 8.8", or a Dana 44, Motive Gear offers a purpose-built kit engineered to fit that specific housing. This breadth of coverage makes them a go-to for shops handling diverse vehicle makes and model years.

Quality Built for Street, Track, and Trail

Motive Gear is a division of Midwest Truck and Auto Parts, and their products are held to the same rigorous standards whether they end up in a daily driver or a purpose-built off-road racer. Their components undergo rigid in-house quality control processes, and the brand's presence at events like NHRA, SCORE, BITD, Ultra-4, and NASCAR underscores how well these parts perform under extreme loads. That racing-derived discipline carries directly into the bearing kits — every included component is selected to meet or exceed OEM specifications.

The kits are backed by a 1-year / 50,000-mile warranty, and because they include all the consumables — marking compound, thread locker, crush sleeve, and seals — there's no need to hunt down individual components before you start the job. That all-in-one philosophy is a hallmark of Motive Gear's approach to differential rebuilding: reduce complexity, improve consistency, and get the axle back under the vehicle performing as it should.

For anyone pairing a new ring-and-pinion set with a rebuild, these kits are designed to complement Motive Gear's own gear sets, making them a natural one-stop solution for a complete differential overhaul.