Best Differential Assembly Kits of 2026

The USA Standard Gear (ZK GM8.6) Master Overhaul Kit for GM 8.6 Differential provides a comprehensive kit for those who want to confidently finish their installation. It features Koyo bearings and races, carrier bearings and races, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush, and gasket that are all vehicle-specific.

A-Premium Carrier Case is a reliable differential assembly kit designed for various GMC and Chevy models. It is directly compatible with a wide range of vehicles, ensuring a dependable fit. The replacement reference numbers make it easy to find the right part for your vehicle. With original equipment dimensions, this kit offers a precise fit for optimal performance. A-Premium provides a one-year unlimited-mileage guarantee, giving you peace of mind on the road.

The A-Premium Differential Kit is designed to fit a range of Chevrolet and GMC models from 2000 to 2008. This kit provides a direct replacement for your original differential assembly, ensuring a seamless fit and reliable performance. With reference numbers 19559-010 and 19559010, it offers peace of mind for your vehicle's drivetrain. Plus, A-Premium backs this product with a one-year unlimited-mileage warranty, allowing you to drive confidently knowing you're covered. It's a smart choice for anyone looking to upgrade or replace their differential assembly with a dependable option.

The Motive Gear Differential Carrier is designed for GM vehicles with 8.5" or 8.625" axles, making it a perfect fit for those looking to enhance their ride. With a 30-spline configuration and a 1.31" axle spline diameter, it ensures a robust connection, providing reliability during demanding drives. Suitable for gear ratios of 2.73 and higher, this carrier allows for improved performance and efficiency. Its open loaded design is great for those who want a versatile option for various driving conditions, giving you the convenience and flexibility you need.

The ARB Differential Breather Kit is a high-flow system that eliminates water from contaminating the oil and damaging your vehicle's drivetrain components. It includes a central high-flow air filter and manifold that can vent up to four drivetrain assemblies to avoid water during crossings. Without this kit, the air inside the assemblies can expand and increase pressure, causing damage to your vehicle.

The MZS Differential Drop Kit is designed specifically for 2007-2021 Silverado and Sierra 1500 models that have a 6-lug configuration. This kit helps eliminate vibrations, which can enhance your driving experience. By improving axle alignment, it also reduces wear on CV joints, extending their lifespan. The product is crafted from durable, corrosion-resistant CNC machined T6 billet, ensuring longevity and reliability. Plus, installation is straightforward, requiring no special tools, making it easy for you to upgrade your vehicle.

The SCITOO Jeep Differential Kit is designed for 2007-2018 Jeep Wranglers, ensuring a perfect fit for your vehicle. This kit includes one rear differential case, providing everything you need for a smooth installation. It replaces several part numbers, making it a versatile choice for your repair needs. With SCITOO’s commitment to matching original factory specifications, you can trust that this kit will perform excellently and maintain your vehicle's integrity. Enjoy the convenience of a high-quality component that simplifies your maintenance tasks and keeps your Jeep running smoothly.

The Weonefit Differential Kit is designed specifically for the 2012-2013 Honda Foreman 500 models. This high-quality assembly kit ensures optimal performance and durability, helping you maintain your ATV's reliability. If you notice any unusual sounds, fluid leaks, or handling issues, this kit can address those symptoms effectively. It fits multiple models within the Foreman series, ensuring a perfect match for your vehicle. Plus, if you're uncertain about compatibility, the customer service team is ready to assist you for a hassle-free experience.

The USA Standard Gear Spider Set is designed specifically for Chrysler vehicles with a 9.25-inch differential and 31-spline. This high-quality OEM replacement includes essential components like two side gears, two pinion gears, a cross pin shaft, and a cross pin bolt. These parts work together to ensure smooth operation and reliable performance for your vehicle. Additionally, the included spider gear thrust washers help to reduce wear and extend the lifespan of your differential. By using this gear set, you can maintain your vehicle's efficiency and enhance its overall performance.

The COOL STAR Breather Kit is designed for use with drivetrain assemblies, including differentials, transmissions, and transfer cases in 4x4 and 4WD vehicles. This kit features a direct replacement fit, ensuring easy installation without any modifications. It includes a durable anodized aluminum manifold with multiple ports, allowing for efficient ventilation and reducing the risk of moisture buildup. Additionally, the package comes with various fittings and accessories, giving you everything needed for a complete setup. With this kit, you can enhance the performance and longevity of your vehicle's drivetrain components.