This Diff Set provides a pre-assembled replacement front or rear differential unit for servicing your vehicle.Features:Factory assembled and filled with 100k cSt silicone oil for fast and efficient servicing - Tough steel internal gears for long-lasting durability in all conditions - 39T 1.5M steel main diff gear for increased durability under extreme loads - Steel Cross Shafts and inserts for increased efficiency of fit and long-lasting durability - Includes bearings for fast and efficient fit to your vehicleIncludes:1 x Assembled Diff - Front or Rear