This Diff Set provides replacement parts for servicing your Diff assembly.Features:Pre-assembled and filled with oil for fast and efficient servicing - Super-tough straight-cut internal gears for long-lasting durability in all conditions - Super-strong composite diff case with integrated 37T bevel gear for increased durability under extreme loads - Precision manufactured screw threads for fast and easy servicing - Precision manufactured gear teeth for consistent performance at high speeds - Specially designed diff case cap for increased strength and durability SPECIFICATIONS: 37 Teeth 1.35 Module gear pitch 10,000cSt oilIncludes:1 x Pre-assembled Gear DiffRequires:It is recommended to replace #ARA311031 when installing a new diff